Perhaps you should try some spelling variations:
eng xiaoping » deng xiaoping, wang xiaoping, wang xiaobing
tuan china » wuhan china, taiwan china, yunnan china
than china » han china, wuhan china, dan china
wang yang » wang yan, wang liang, wang yanling
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: eng xiaoping ((((tuan china) OR (can china))) OR (than china)) wang yang jin data (hai OR hari) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "eng xiaoping ((((tuan china) OR (can china))) or (than china)) wang yang jin data (hai or hari) ;~".
• Adding a wildcard symbol may retrieve word variants: eng xiaoping ((((tuan china) OR (can china))) or (than china)) wang yang jin data (hai or hari) ;*.