Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
gang wong » gang gong, gang sung
wong sam » wong sau, wong lai, kong sar
nan yan » nan ya, qian yan, dan yang
ping xu » ling xu, ping ku, ping yu
xu gang » yu gang, zum gang, liu 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) OR (dong sin)) ((nan yan) OR (yang guang)) ping xu gang wong sam ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (dong sin)) ((nan yan) or (yang guang)) ping xu gang wong sam ;*.