Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
sang minh » kang minah, anh minh, song min
wong siew » long view
yang jun » yang jui, pang jun, yang jin
wong sam » wong sau, wong lai, kong sar
yang li » yang lin, yang di, yang xi
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 li) OR (yang jun)) xu sang minh ((wong siew) OR (wong sam)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong ((yang li) or (yang jun)) xu sang minh ((wong siew) or (wong sam)) ;*.