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
chia wen » china won, ching wen, asia wen
wen yang » wei yang, wen wang, chen yang
wong yue » wang yue, hong yu
di wong » dr wong, kie wong

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 di wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan kang) OR (chan eng)) tan chia wen yang di wong yue ;".
• Adding a wildcard symbol may retrieve word variants: ((yuan kang) OR (chan eng)) tan chia wen yang di wong yue ;*.