Search strings containing spaces do not yield any results for article attributes.

[KhalilHamada-OTOBO]

When performing a standard search for a specific subject, no results are returned. However, searching for individual terms yields relevant matches.
The reason for this is that a search index is created in the background for the articles, which only functions with single words

[svenoe]

Please have a look whether there could be a solution which does not involve major changes to the article indexing, but at least returns somewhat reasonable tickets. If there is none, we won't change anything here.