Perhaps you should try some spelling variations:
yuan ping » yuan ming, yuan ting, yuen ping
yan yuan » yan guan, fang yuan, nan yan
liu yang » liu yan, du yang, liu feng
wong siu » wong shiu, kong siu, wong sau
wan yan » wang yan, nan yan, wai yan
dong di » dong sin
yu yang » du yang, yi yang, yu fang

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