Perhaps you should try some spelling variations:
"moderne asthetik - koordinaten" » "moderner asthetik - koordinaten", "andere asthetik - koordinaten", "oder asthetik - koordinaten"
"modern aesthetic - koordinaten" » "modern aesthetics - koordinaten", "modern anesthetic - koordinaten", "modern anaesthetic - koordinaten"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"moderne asthetik - koordinaten\") OR (\"modern aesthetic - koordinaten\"))".
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• Adding a wildcard symbol may retrieve word variants: (("moderne asthetik - koordinaten") OR ("modern aesthetic - koordinaten"))*.