Perhaps you should try some spelling variations:
"texts zur popularen musik" » "texts zur populare musik", "texts der popularen musik", "texts des popularen musik", "texte zur popularen musik", "texte zu popularen musik", "text zu popularen musik"
"texts zur popularen music" » "texts zur populare musik", "texts der popularen music", "texts des popularen music", "texte zur popularen music", "texte zu popularen music", "text zu popularen music"
"text zum popular music" » "text from popular music", "text zum formular music", "text im popular music"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("text zum popular music") or ((("texts zur popularen music") OR ("texts zur popularen musik"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("text zum popular music") OR ((("texts zur popularen music") OR ("texts zur popularen musik")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"text zum popular music\") or (((\"texts zur popularen music\") OR (\"texts zur popularen musik\"))))".
• Removing quotes may allow a broader search: (( text zum popular music ) or ((( texts zur popularen music ) OR ( texts zur popularen musik )))).
• Adding a wildcard symbol may retrieve word variants: (("text zum popular music") or ((("texts zur popularen music") OR ("texts zur popularen musik"))))*.