Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
den xiaoping » deng xiaoping, _ xiaoping, ren xiaodong
tan cheng » tang zheng, yuan cheng, tan hong
tan chen » ta chen, jane chen, jean chen
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((den xiaoping) OR (wang xiaoping)) ((tan chen) OR (tan cheng)) wei yang jin data (hai OR hari) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((den xiaoping) OR (wang xiaoping)) ((tan chen) or (tan cheng)) wei yang jin data (hai or hari) ;~".
• Adding a wildcard symbol may retrieve word variants: ((den xiaoping) OR (wang xiaoping)) ((tan chen) or (tan cheng)) wei yang jin data (hai or hari) ;*.