The catalogue data is displayed in German, for example. When completing the search fields, e.g., 'Name' field, you would prefer to enter the search term, e.g., in English.
In the field Search in language select the desired language in which you want to enter the search term:
The evaluation of the language is effected in all multilingual search fields.
The search result also shows the relevant fields in the language that is defined as the language for the catalogue data.