Perhaps you should try some spelling variations:
den xiaoping » deng xiaoping, wang xiaoping, _ xiaoping
tan cheng » tang zheng, yuan cheng, tan hong
tan chen » ta chen, jane chen, jean chen
wei ming » wei yiming, wei qiang, ie ming
ming jin » ying jin, min jin, ming qing
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 (tan cheng)) wei ming jin data (hai or hari) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: den xiaoping ((tan chen) OR (tan cheng)) wei ming jin data (hai OR hari) ;*.