Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
china dan » china den, china data, china des
zhong tai » hong tan, hong hai, zhong zhi
shang hai » shang kai, dang hai, chang ha
wang anh » dang anh, wang yang, wang yan
anh tuan » anh tran, dinh tuan, oanh tran
dan wang » dan yang, yan wang, qian wang
wang lin » wang li, wang qin, yang lin

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 anh tuan china dan wang lin ((zhong tai) OR (shang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang anh tuan china dan wang lin ((zhong tai) or (shang hai)) ;*.