Perhaps you should try some spelling variations:
chen yiqun » chen yun, shen yijun
wang yang » wang liang, wang yanling
wang yong » wang hyoung, wang shiyong
john wong » john song, john bonn
yang jui » yang judy, yang di, yang xi
jui chen » yi chen
wong sam » wong sau, wong lai, kong sar

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