Perhaps you should try some spelling variations:
fordern das » fordern als, fordern am, formen das
formen lam » formen im, formen a, formen ab
qian pong » qian rong
qian wang » yiqian wang, qian rong, qian yan
klang iii » klang die, zwang iii
david n » david a, david _, david k
n hai » _ hai

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: ((qian pong) OR (qian wang)) klang iii ((formen lam) OR (fordern das)) david n hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((qian pong) OR (qian wang)) klang iii ((formen lam) or (fordern das)) david n hai ;~".
• Adding a wildcard symbol may retrieve word variants: ((qian pong) OR (qian wang)) klang iii ((formen lam) or (fordern das)) david n hai ;*.