Perhaps you should try some spelling variations:
yuan kang » yuan wang, yuan chang, chan kang
chan eng » chan fong, chan kang, chan ming
tan chia » tuan china, than china, can china
wen yang » wei yang, chen yang, wang yang
wen wang » wei wang, chen wang, weng fang
wong yue » wang yue, hong yu
dr wong » dr ong, dr congo, dr kongo

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