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

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)) ((tan hua) OR (tuan hua)) rene ((yang jin) or (yang lin)) wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yang yang)) ((tan hua) OR (tuan hua)) rene ((yang jin) OR (yang lin)) wong yue ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (yang yang)) ((tan hua) OR (tuan hua)) rene ((yang jin) or (yang lin)) wong yue ;".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yang yang)) ((tan hua) OR (tuan hua)) rene ((yang jin) or (yang lin)) wong yue ;*.