Perhaps you should try some spelling variations:
kur » kurz, kurt, kurs
kurtet » kurztet, kurttet, kurstet, kartet
kurten » kurzten, kurtten, kursten, kurtzen, hurten
kurzzt » kurzzzt, kurtzzt, kurszzt, kurzzeit
kursen » kurzsen, kurtsen, kurssen

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 (((kurtet OR kurten) OR kurzzt) OR kursen)) OR kaursse)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((kur or (((kurtet OR kurten) or kurzzt) or kursen)) or kaursse)*".