Perhaps you should try some spelling variations:
guan chia » tuan china, tan chia
chia gene » chia wen, china gender
yan guan » gan guan, yan yuan, yang guang
yang jui » yang judy, yang yi
wong sam » wong sau, kong sar, von sam
yang xi » yang yi
wang » wing, wan, lang
lai » laid

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 yan guan chia gene ((((yang jui) OR (yang xi))) OR (yang di)) ((wong sam) OR (wong lai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan guan chia gene ((((yang jui) or (yang xi))) or (yang di)) ((wong sam) or (wong lai)) ;*.