Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
than china » tuan china, han china, wuhan china
yuan wang » yan wang, yuan kang, qian wang
tan chia » tuan china, can china, dan china
wong yue » wang yue, hong yu
di wong » dr wong, kie wong
yang » lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan wang) OR (yuan chang)) ((tan chia) or (than china)) rene yang di wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan chang)) ((tan chia) OR (than china)) rene yang di wong yue ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) OR (yuan chang)) ((tan chia) or (than china)) rene yang di wong yue ;*".