Perhaps you should try some spelling variations:
kur » kurs
kurt » kurst
kursst » kurssst, kursat
kurz » kursz
kurzest » kurszest, kurzeste, kurztest, kurzes
kaur » kaum, kauf, kar
kaursse » kaumsse, kaufsse, karsse

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((((kur OR kurt) OR kaur) OR kursst) OR (kurz OR kurzest)) OR kaursse).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((kur OR kurt) or kaur) or kursst) or (kurz or kurzest)) or kaursse)".
• Adding a wildcard symbol may retrieve word variants: (((((kur OR kurt) or kaur) or kursst) or (kurz or kurzest)) or kaursse)*.