Perhaps you should try some spelling variations:
wang yang » wang liang, wang yanling
wang yong » wang hyoung, wang shiyong
john wong » john song, john bonn
chen yun » chen yu, chen yue, chen yiqun
yun john » ryan john, turn john, von john
wong sam » wong sau, wong lai, kong sar
yang xi » yang di, yang yi, yang jui
xi chen » xi cheng, yi chen, li chen

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: ((((wang yan) OR (wang yang))) OR (wang yong)) yang xi chen yun john wong sam ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wang yan) or (wang yang))) or (wang yong)) yang xi chen yun john wong sam ;*.