Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
wang yang » wang yan, wang liang, wang yanling
tan chia » than china, can china, dan china
jiu gong » jiu cong, liu gang, wu gong
gong hui » tong hui, tong shui, wang hui
tan hua » tuan hua, wang hua, tan puay
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 (((tan chia) OR (tuan china)))) ren yan jiu gong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang ((tan hua) or (((tan chia) OR (tuan china)))) ren yan jiu gong hui ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang ((tan hua) or (((tan chia) OR (tuan china)))) ren yan jiu gong hui ;*.