diff --git a/content/themes/custom/functions/class-apitranslation.php b/content/themes/custom/functions/class-apitranslation.php
index 73b6a0b..0b34700 100644
--- a/content/themes/custom/functions/class-apitranslation.php
+++ b/content/themes/custom/functions/class-apitranslation.php
@@ -40,7 +40,7 @@ public static function get_translations() {
             // Get translations from the api and transform them into an easily searchable format
             $kaannos_json = get_field( 'kaannos-json', 'option' );
             $translations = \POF\Api::get( $kaannos_json, true );
-            $locale       = substr( get_locale(), 0, 2 );
+            $locale       = get_short_locale();
             foreach ( $translations as &$group ) {
                 foreach ( $group as $lang ) {
                     if ( $lang['lang'] === $locale ) {
diff --git a/content/themes/custom/functions/function-api_data_helpers.php b/content/themes/custom/functions/function-api_data_helpers.php
index 028d698..093de48 100644
--- a/content/themes/custom/functions/function-api_data_helpers.php
+++ b/content/themes/custom/functions/function-api_data_helpers.php
@@ -322,12 +322,14 @@ function sort_by_order( $a, $b ) {
 /**
  * Get age groups from the api
  *
+ * @param  bool $filter Whether we should filter the results to the current language.
  * @return array
  */
-function get_age_groups() {
+function get_age_groups( bool $filter = false ) : array {
     $ohjelma_json = get_field( 'ohjelma-json', 'option' );
-    $program      = \POF\Api::get( $ohjelma_json, true );
-    $age_groups   = $program['program'][0]['agegroups'];
+    $program      = \POF\Api::get( $ohjelma_json, true )['program'];
+    $program      = $filter ? array_reduce( $program, 'filter_api_items', [] ) : $program;
+    $age_groups   = $program[0]['agegroups'];
 
     usort( $age_groups, 'sort_by_order' );
     sort_results( $age_groups );
@@ -335,6 +337,48 @@ function get_age_groups() {
     return $age_groups;
 }
 
+/**
+ * Recursively filter api items and its child items to current language
+ * Should only be called via array_reduce
+ *
+ * @param  array $items Final result.
+ * @param  array $item  Api item to filter.
+ * @return array        Modified $items.
+ */
+function filter_api_items( array $items, array $item ) : array {
+    if ( array_key_exists( 'languages', $item ) ) {
+        $lang_exists = array_reduce( $item['languages'], 'languages_has_current', false );
+
+        if ( $lang_exists ) {
+            $keys_to_traverse = [
+                'agegroups',
+                'taskgroups',
+                'tasks',
+            ];
+            foreach ( $keys_to_traverse as $key ) {
+                if ( ! empty( $item[ $key ] ) ) {
+                    $item[ $key ] = array_reduce( $item[ $key ], 'filter_api_items', [] );
+                }
+            }
+            $items[] = $item;
+        }
+    }
+
+    return $items;
+}
+
+/**
+ * Check api items languages if it contains current language
+ * Should only be called via array_reduce
+ *
+ * @param  bool  $result True or false depending on if current language exists.
+ * @param  array $lang   Language to check.
+ * @return bool          Whether language exists.
+ */
+function languages_has_current( bool $result, array $lang ) {
+    return $result ? $result : $lang['lang'] === get_short_locale();
+}
+
 /**
  * Flatten api program tree into a single array
  *
diff --git a/content/themes/custom/functions/function-lang_helpers.php b/content/themes/custom/functions/function-lang_helpers.php
index 6495d3d..81b2502 100644
--- a/content/themes/custom/functions/function-lang_helpers.php
+++ b/content/themes/custom/functions/function-lang_helpers.php
@@ -74,3 +74,13 @@ function generate_search_url( $search = '', $lang = null ) {
 
     return $url;
 }
+
+/**
+ * Get the short version of the locale
+ *
+ * @return string
+ */
+function get_short_locale() : string {
+    $locale = reset( str_word_count( get_locale(), 1 ) );
+    return $locale;
+}
diff --git a/content/themes/custom/functions/function-program_lang_helper.php b/content/themes/custom/functions/function-program_lang_helper.php
index 995b0b7..dd1254f 100644
--- a/content/themes/custom/functions/function-program_lang_helper.php
+++ b/content/themes/custom/functions/function-program_lang_helper.php
@@ -16,7 +16,7 @@ class ApiTitle extends Helper {
      * @return string
      */
     public function output() {
-        $locale    = $this->params->locale ?? $this->context->get( 'locale' ) ?? explode( '_', get_locale() )[0];
+        $locale    = $this->params->locale ?? $this->context->get( 'locale' ) ?? get_short_locale();
         $title     = $this->params->title ?? $this->context->get( 'title' );
         $languages = $this->params->languages ?? $this->context->get( 'languages' );
 
diff --git a/content/themes/custom/models/search.php b/content/themes/custom/models/search.php
index 7190a81..929ad22 100644
--- a/content/themes/custom/models/search.php
+++ b/content/themes/custom/models/search.php
@@ -39,16 +39,6 @@ public function Content() {
         return true;
     }
 
-    /**
-     * Get short locale
-     *
-     * @return string First part of locale.
-     */
-    public static function get_locale() {
-        $locale = explode( '_', get_locale() )[0];
-        return $locale;
-    }
-
     /**
      * Get search terms and translations from api
      */
@@ -57,7 +47,7 @@ public static function ApiSearchTerms() {
         // Get remote data
         $haku_json    = get_field( 'haku-json', 'option' );
         $search_terms = \POF\Api::get( $haku_json, true );
-        $age_groups   = get_age_groups();
+        $age_groups   = get_age_groups( true ); // Get age groups filtered to current language
 
         // Create pseudo filtering field for api_type
         $search_terms['api_type'] = [
@@ -366,7 +356,7 @@ protected function get_post_data( stdClass $result, stdClass $params ) {
                     'guid'      => $post->fields['api_guid'],
                     'languages' => [
                         [
-                            'lang'  => static::get_locale(),
+                            'lang'  => get_short_locale(),
                             'title' => $parent_post->post_title,
                         ],
                     ],