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, yu wang
qian wang » yiqian wang, qian rong, qian yan
china ren » china loren, china real, china reza
ren yang » ren yan, chen yang, dan 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 wang) OR (qian wang))) or (yuan chang)) than china ren yang dr wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yuan wang) OR (qian wang))) OR (yuan chang)) than china ren yang dr wong yue ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yuan wang) OR (qian wang))) or (yuan chang)) than china ren yang dr wong yue ;".
• Adding a wildcard symbol may retrieve word variants: ((((yuan wang) OR (qian wang))) or (yuan chang)) than china ren yang dr wong yue ;*.