Perhaps you should try some spelling variations:
den xiaoping » deng xiaoping, wang xiaoping, _ xiaoping
yuan cheng » yuan chang, huang cheng, yu cheng
tan chen » tan cheng, ta chen, jane chen
wei wang » wei yang, wen wang, wei shang
wang jin » wang jing, yang jin, wang jun
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 (yuan cheng)) wei wang jin data (hai or hari) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: den xiaoping ((tan chen) OR (yuan cheng)) wei wang jin data (hai OR hari) ;*.