Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
den xiaoping » deng xiaoping, _ xiaoping, ren xiaodong
tan chen » tan cheng, ta chen, jane chen
wei yang » wei wang, wei yang's, wei shang
pei yang » hui yang, pei yun, yi yang
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) OR (wang xiaoping)) tan chen ((wei yang) or (pei yang)) jin data (hai or hari) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((den xiaoping) OR (wang xiaoping)) tan chen ((wei yang) OR (pei 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 ((wei yang) or (pei yang)) jin data (hai or hari) ;*".