Perhaps you should try some spelling variations:
yuan kang » yuan chang, chan kang, yuan kai
yuan wang » yan wang, yuan chang, qian wang
chen yang » chen rong
chan eng » chan fong, chan kang, chan ming
tan chia » tuan china, than china, can china
wei wang » wei yang, wen wang, wei shang
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 (yuan wang))) or (chan eng)) tan chia ((chen yang) or (wei wang)) dr wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yuan kang) OR (yuan wang))) OR (chan eng)) tan chia ((chen yang) OR (wei wang)) dr wong yue ;.
• Adding a wildcard symbol may retrieve word variants: ((((yuan kang) or (yuan wang))) or (chan eng)) tan chia ((chen yang) or (wei wang)) dr wong yue ;*.