Perhaps you should try some spelling variations:
dong ryang » dong yang, dong hoang
wei yang » pei yang, wei wang, wei yang's
yang hui » yang jui, wang hui, yang muxi
ping shu » ping ku, ping yu
a wei » a weit, ha wei, ma wei
et a » et al, et la, e a
ryang » rryang
yan » ryan
yang » ryang

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: ((dong ryang) OR (wang yan)) et a wei yang hui ((ping shu) OR (cong shu)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((dong ryang) or (wang yan)) et a wei yang hui ((ping shu) or (cong shu)) ;*.