Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
tuan china » wuhan china, can china, yunnan china
yuan wang » yan wang, yuan kang, qian wang
rene wang » wen wang
wang qin » wang lin, wang qiao, wang jing
qin wong » qing long, kie wong
wong yue » wang yue, hong yu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan chang)) ((tuan china) OR (taiwan china)) rene wang qin wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (yuan chang)) ((tuan china) OR (taiwan china)) rene wang qin wong yue ;~".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yuan chang)) ((tuan china) OR (taiwan china)) rene wang qin wong yue ;*.