Perhaps you should try some spelling variations:
kliffe » kniffe, cliffe, kliff, kliffee, klifee, klifte
kliffen » kniffen, cliffen, kliffn, kiffen, kliffeen, klifeen, kliften
liff » liffe, life, lift
cliff » cliffe, clife, clift

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: (((kliffe OR kliffen) OR liff) OR cliff) (am)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((kliffe OR kliffen) or liff) or cliff) (am)*".