Perhaps you should try some spelling variations:
zhang ming » zhang xin
yong yang » dong yang, ying yang, kyoung yang
yang yang » wang yang, wang yan
liu zhang » li zhang, liu yang, bin zhang
wong sam » wong sau, wong lai, kong sar
wong siu » wong shiu, kong siu, wong sau
xi liu » x liu, xu liu
von sa » von sam, von sap, von sl

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) OR (yang yang)) xi liu zhang ming ((((wong sam) OR (wong siu))) OR (von sa)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong yang) OR (yang yang)) xi liu zhang ming ((((wong sam) or (wong siu))) or (von sa)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yong yang) OR (yang yang)) xi liu zhang ming ((((wong sam) or (wong siu))) or (von sa)) ;*.