Perhaps you should try some spelling variations:
den xiaoping » deng xiaoping, wang xiaoping, _ xiaoping
xiaoping can » mapping can, xiaojing a, xiaoping _
china tan » china top, china two, china taiwan
yang wind » yang cindy, yang jing, yang lin
yang mind » yang cindy, sang minh, tang min
yang jin » yang jie, yang jun, ying jin

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