Perhaps you should try some spelling variations:
fordern das » fordern als, fordern am, formen das
formen lam » formen im, formen a, formen ab
david hong » david ng
qian pong » qian rong, qian wang
klang iii » zwang iii
klang die » klang der, klaue die
hong hai » shang hai, zhong tai, dang 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 ((klang iii) OR (klang die)) ((formen lam) OR (fordern das)) david hong hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "qian pong ((klang iii) OR (klang die)) ((formen lam) or (fordern das)) david hong hai ;~".
• Adding a wildcard symbol may retrieve word variants: qian pong ((klang iii) OR (klang die)) ((formen lam) or (fordern das)) david hong hai ;*.