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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan wang) or (yang yang)) ((dan hua) OR (dong hua)) rene ((yang jin) or (yang lin)) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yang yang)) ((dan hua) OR (dong hua)) rene ((yang jin) OR (yang lin)) hong yu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (yang yang)) ((dan hua) OR (dong hua)) rene ((yang jin) or (yang lin)) hong yu ;*".