Perhaps you should try some spelling variations:
"texts zur popularen musik" » "texts der popularen musik", "texts des popularen musik", "texts der popularenn musik", "texts das popularen musik", "texts war popularen musik", "texts more popularen musik", "texts der populareen musik", "texte zur popularen musik", "texte zu popularen musik", "text zum popularen musik"
"texts zur populare musik" » "texts der populare musik", "texts der popularen musik", "texts das populare musik", "texts war populare musik", "texts more populare musik", "texts der popularee musik", "texte zur populare musik", "texte zu populare musik", "text zum populare musik"
"texts zur popular music" » "texts war popular music", "texts more popular music", "texts der populare music", "texte zur popular music", "texte zu popular music", "text zum 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: (((("texts zur popularen musik") OR ("texts zur populare musik"))) or ("texts zur popular music"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("texts zur popularen musik") OR ("texts zur populare musik"))) OR ("texts zur popular music")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"texts zur popularen musik\") OR (\"texts zur populare musik\"))) or (\"texts zur popular music\"))".
• Removing quotes may allow a broader search: (((( texts zur popularen musik ) OR ( texts zur populare musik ))) or ( texts zur popular music )).
• Adding a wildcard symbol may retrieve word variants: (((("texts zur popularen musik") OR ("texts zur populare musik"))) or ("texts zur popular music"))*.