Perhaps you should try some spelling variations:
john wong » john song, john bonn
yin hang » yin fang, yin yang, ying chang
wong sam » wong sau, wong lai, kong sar
yang yi » yang xi, yang jui
yi yang » yin yang, yi gang, ying yang
yu yang » du yang, yu fang, yu gang
wang » wing, wan, lang

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 ((yang yi) OR (yang di)) ((yin hang) OR (((yi yang) OR (yu yang)))) john wong sam ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan ((yang yi) or (yang di)) ((yin hang) or (((yi yang) or (yu yang)))) john wong sam ;*.