Perhaps you should try some spelling variations:
yunnan china » urban china, wuhan china, yunnan sheng
than china » han china, wuhan china, can china
tuan china » wuhan china, can china, taiwan china
yuan wang » yan wang, yuan kang, yuan chang
data yang » apa yang
wong yue » wang yue, hong yu
di wong » dr wong, kie wong

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 ((than china) or (((yunnan china) or (tuan china)))) data yang di wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan wang ((than china) OR (((yunnan china) OR (tuan china)))) data yang di wong yue ;.
• Adding a wildcard symbol may retrieve word variants: yuan wang ((than china) or (((yunnan china) or (tuan china)))) data yang di wong yue ;*.