Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
sang minh » kang minah, anh minh, song min
yang lin » yang jin, wang lin, yang li
yang jun » yang jui, pang jun, yang jin
wong sau » wong siu, wong shiu, wong lai
wong sam » wong lai, kong sar, von sam
xu sang » du sang, xu gang

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 yong ((yang lin) OR (yang jun)) xu sang minh ((wong sau) OR (wong sam)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong ((yang lin) or (yang jun)) xu sang minh ((wong sau) or (wong sam)) ;*.