Perhaps you should try some spelling variations:
kur » kurt, kurs, kaur
kurz » kurtz, kursz, kaurz
kuret » kurtet, kurset, kauret, kurt, kuren, muret
kurzzeit » kurtzzeit, kurszzeit, kaurzzeit
turen » ture, turin, tures

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 kurz) OR ((kuret OR kurzzeit) OR turen)) OR kaursse).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((kur OR kurz) or ((kuret or kurzzeit) or turen)) or kaursse)".
• Adding a wildcard symbol may retrieve word variants: (((kur OR kurz) or ((kuret or kurzzeit) or turen)) or kaursse)*.