Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
wang yang » wang yan, wang liang, wang yanling
yang than » yang dean, yang fan
china wen » chia wen, china won, ching wen
pang jiu » pang jun, yang jin, pan ji
yang jie » yang jin, yang di, yang jui
ying jin » yang jin, jing ji
yan jiu » yang jin

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 than china wen ((((yan jiu) OR (pang jiu))) OR (((yang jie) OR (ying jin)))) cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang than china wen ((((yan jiu) OR (pang jiu))) or (((yang jie) or (ying jin)))) cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang than china wen ((((yan jiu) OR (pang jiu))) or (((yang jie) or (ying jin)))) cong shu ;*.