Perhaps you should try some spelling variations:
yuan kang » yuan wang, yuan chang, chan kang
yang yang » wang yang, wang yan
tuan hua » tuan vu, yuan hui
yang jun » yang jui, pang jun, yang jin
wong yue » wang yue, hong yu
tan hua » wang hua, tan chia, tan puay
yang li » yang lin, yang di, yang xi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan kang) or (yang yang)) ((tan hua) or (tuan hua)) rene ((yang jun) or (yang li)) wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan kang) OR (yang yang)) ((tan hua) OR (tuan hua)) rene ((yang jun) OR (yang li)) wong yue ;.
• Adding a wildcard symbol may retrieve word variants: ((yuan kang) or (yang yang)) ((tan hua) or (tuan hua)) rene ((yang jun) or (yang li)) wong yue ;*.