Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
wong john » wrong john, kong john, longo john
yang hua » wang hua, yang hui, ying hua
ren wong » ren weng
hua ren » hua chen
von sam » von sa, von sap, von sach
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 yang hua ren wong john ((((von sam) OR (von scham))) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang yang hua ren wong john ((((von sam) or (von scham))) or (kong sar)) ;*.