Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
den xiaoping » deng xiaoping, _ xiaoping, ren xiaodong
yang wind » yang mind, yang cindy, yang jin
tan chia » tuan china, than china, can china
chia tan » chia lan, chen tan, chia wen
tan yang » dan yang, tan ying, tan yong

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 chia tan yang wind data (hai OR hari) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((den xiaoping) OR (wang xiaoping)) tan chia tan yang wind data (hai or hari) ;~".
• Adding a wildcard symbol may retrieve word variants: ((den xiaoping) OR (wang xiaoping)) tan chia tan yang wind data (hai or hari) ;*.