Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
gang kong » gang gong, hong kong, king kong
kong siu » kong eiu, wong siu, dong sin
dong di » dong sin
nan yan » nan ya, qian yan, dan yang
ping ku » ping ke, ping yu
ku gang » xu gang, yu gang, zum 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 di)) ((nan yan) OR (yang guang)) ping ku gang kong siu ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (dong di)) ((nan yan) or (yang guang)) ping ku gang kong siu ;*.