Perhaps you should try some spelling variations:
den xiaoping » deng xiaoping, wang xiaoping, _ xiaoping
tang zheng » wang zheng, fang sheng, fang zhen
jane chen » jean chen, jie chen, kang chen
tan chen » tan cheng, ta 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.

• Performing a fuzzy search may retrieve terms with similar spellings: den xiaoping ((((tan chen) OR (jane chen))) or (tang zheng)) wei yang jin data (hai or hari) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: den xiaoping ((((tan chen) OR (jane chen))) OR (tang zheng)) wei yang jin data (hai OR hari) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "den xiaoping ((((tan chen) OR (jane chen))) or (tang zheng)) wei yang jin data (hai or hari) ;*".