Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
than china » han china, wuhan china, can china
wang yang » wang yan, wang liang, wang yanling
jiu tong » jiu cong, jiao tong, liu yong
tong hui » wang hui
tan hua » tuan hua, wang hua, tan chia
yan jiu » yang jie, yang jin, pang jiu

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: wang yang ((tan hua) OR (((tuan china) OR (than china)))) ren yan jiu tong hui ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang ((tan hua) or (((tuan china) or (than china)))) ren yan jiu tong hui ;*.