Perhaps you should try some spelling variations:
kur » kurt, kurs, kaur
kurz » kurtz, kursz, kaurz
kursat » kurtsat, kurssat, kaursat, kursad
kursstal » kurtsstal, kurssstal, kaursstal, kursstand, kurstak, kurstag
kurzen » kurtzen, kurszen, kaurzen, kurzer

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 kursat) OR (kursstal OR kurzen)) OR kaursse)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((kur OR kurz) or kursat) or (kursstal or kurzen)) or kaursse)*".