Perhaps you should try some spelling variations:
zhang ming » zhang xin
wang yong » wang yang, wang hyoung, wang yan
yong yang » yang yang, dong yang, ying yang
liu zhang » li zhang, liu yang, bin zhang
wong sau » wong sam, wong shiu, wong lai
wong siu » wong shiu, kong siu, wong siew
yang xi » yang di, yang yi, yang jui
xi liu » x liu, xu liu
von sl » von sa, von sles

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 xi liu zhang ming ((((wong sau) OR (wong siu))) OR (von sl)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong yang xi liu zhang ming ((((wong sau) or (wong siu))) or (von sl)) ;*.