Perhaps you should try some spelling variations:
yuhan china » wuhan china, yunnan china, tuan china
wang yuhan » wang luhang, wang yan, wang yidan
china rene » china ren, china rate, china real
yuan wang » yan wang, yuan kang, yuan chang
yang din » yang jin, yang lin, yang dean
wong yue » wang yue, hong yu

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