Perhaps you should try some spelling variations:
kur » kurt, kurs, kaur
kurz » kurtz, kursz, kaurz
kurtttst » kurttttst, kurstttst, kaurtttst
kurstz » kurtstz, kursstz, kaurstz
kauers » kaufers, kauders, bauers

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