Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
xiaoping tuan » xinping guan
tuan china » wuhan china, can china, taiwan china
china daun » china data, china den, china due
yang cindy » yang mind
yang jin » yang jie, yang jun, ying 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 xiaoping tuan china daun ((yang jin) OR (yang cindy)) (dang OR lang) (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaoping tuan china daun ((yang jin) or (yang cindy)) (dang or lang) (hai or hari) ;*.