Perhaps you should try some spelling variations:
yang xiuyan » wang xiuyan, wang xinyan
wang yang » wang yan, wang liang, wang yanling
chen kong » chen rong, chen yong, chen dung
kong john » king john, wong john, longo john
wong sam » wong sau, wong lai, von sam
yu chen » yu cheng, yi chen, yulu chen
sar » sara, star, saur

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 yang xiuyan yu chen kong john ((((wong sam) OR (von scham))) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang xiuyan yu chen kong john ((((wong sam) or (von scham))) or (kong sar)) ;*.