Perhaps you should try some spelling variations:
kur » kurz, kurt, kurs
kurtzzen » kurztzzen, kurttzzen, kurstzzen, kurtzen, kurzen, kurtze
kurzzt » kurzzzt, kurtzzt, kurszzt, kurzzeit
kuren » kurzen, kurten, kursen, karen, turen, buren

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 ((kurtzzen OR kurzzt) OR kuren)) OR kaursse).
• Adding a wildcard symbol may retrieve word variants: ((kur or ((kurtzzen or kurzzt) or kuren)) or kaursse)*.