Perhaps you should try some spelling variations:
china gender » china under, child gender, chiefs gender
wang man » wang yan, wang ban, wang dan
yang jui » yang judy, yang yi
wong sau » wong siu, wong shiu, wong lai
wong sam » wong lai, kong sar, von sam
man can » man han, woman can, man kann
yang xi » yang yi

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 man can china gender ((((yang jui) OR (yang xi))) OR (yang di)) ((wong sau) OR (wong sam)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang man can china gender ((((yang jui) or (yang xi))) or (yang di)) ((wong sau) or (wong sam)) ;*.