Perhaps you should try some spelling variations:
den xiaoping » deng xiaoping, wang xiaoping, _ xiaoping
than china » han china, wuhan china, can china
tuan china » wuhan china, can china, taiwan china
wei yang » pei yang, wei wang, wei yang's
yang jin » yang jie, yang jun, ying jin
jin data » main data, own data, von data

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: den xiaoping ((than china) or (tuan china)) wei yang jin data (hai or hari) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: den xiaoping ((than china) OR (tuan china)) wei yang jin data (hai OR hari) ;*.