Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
guang hua » wang hua, gang hu, guang eu
hua irene » hua ren
wong john » wrong john, kong john, longo john
lang yan » wang yan, zhang yan, yang yang
wong sam » wong sau, wong lai, von sam
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: ((lang yan) OR (wang yang)) guang hua irene wong john ((wong sam) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((lang yan) or (wang yang)) guang hua irene wong john ((wong sam) or (kong sar)) ;*.