Perhaps you should try some spelling variations:
kur » kurz, kurt, kurs
kuret » kurzet, kurtet, kurset, kurt, muret, furet
kuren » kurzen, kurten, kursen, karen, buren, keren
kurszzeit » kurzszzeit, kurtszzeit, kursszzeit, kurzzeit
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 (((kuret OR kuren) OR kurszzeit) OR turen)) OR kaursse).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((kur or (((kuret OR kuren) or kurszzeit) or turen)) or kaursse)".
• Adding a wildcard symbol may retrieve word variants: ((kur or (((kuret OR kuren) or kurszzeit) or turen)) or kaursse)*.