Perhaps you should try some spelling variations:
fordern das » fordern als, fordern am, formen das
port klang » port land
klang iii » klang die, zwang iii
formen ab » formen a, formen das, formen im
david ng » david g, david n, david a
ng hai » dang hai, hong hai
qian » ian, kian, jian

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 port klang iii ((formen ab) OR (fordern das)) david ng hai ;~.
• Adding a wildcard symbol may retrieve word variants: qian port klang iii ((formen ab) or (fordern das)) david ng hai ;*.