Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
yang yang » wang yang, wang yan
hua rene » hua ren, juan rene
yang jin » yang jie, yang jun, ying jin
yang lin » wang lin, yang li, yang liang
wong yue » wang yue, hong yu
dan hua » tan hua, wang hua, dong hua

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: ((yuan wang) OR (yang yang)) dan hua rene ((yang jin) OR (yang lin)) wong yue ;~.
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yang yang)) dan hua rene ((yang jin) or (yang lin)) wong yue ;*.