Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
gang wong » gang gong, gang sung
ping liu » ping lin, dong liu, ping jia
liu gang » liu gangs, liu yang, li gang
wong siu » wong shiu, kong siu, wong sau
wan yan » wang yan, wai yan, wang yang
dong di » dong sin
nan yan » nan ya, wang yan, qian yan

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: ((wan yan) OR (dong di)) ((nan yan) OR (yang guang)) ping liu gang wong siu ;~.
• Adding a wildcard symbol may retrieve word variants: ((wan yan) or (dong di)) ((nan yan) or (yang guang)) ping liu gang wong siu ;*.