Perhaps you should try some spelling variations:
xiaoping tuan » xinping guan
den xiaoping » deng xiaoping, wang xiaoping, _ xiaoping
tuan china » wuhan china, can china, taiwan china
china tan » china top, china two, china taiwan
tang yun » yang yun, chang yun, fang yuan
yang fan » zhang fan, yang dean, yang yang

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: den xiaoping tuan china tan ((tang yun) OR (yang fan)) data (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: den xiaoping tuan china tan ((tang yun) or (yang fan)) data (hai or hari) ;*.