Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yan wang » yuan wang, qian wang, yan liang
yang jun » yang jui, pang jun, yang jin
yang lin » yang jin, wang lin, yang li
wong yue » wang yue, hong yu
dan hua » wang hua, dong hua, tuan hua
tan hua » tuan hua, wang hua, tan chia

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: ((yan wang) OR (yang yang)) ((dan hua) OR (tan hua)) rene ((yang jun) OR (yang lin)) wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan wang) or (yang yang)) ((dan hua) OR (tan hua)) rene ((yang jun) or (yang lin)) wong yue ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan wang) or (yang yang)) ((dan hua) OR (tan hua)) rene ((yang jun) or (yang lin)) wong yue ;*.