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
yang dr » yang di, yang d, yang du
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 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 dr wong yue ;.
• Adding a wildcard symbol may retrieve word variants: ((yuan kang) or (chan eng)) tan chia wen yang dr wong yue ;*.