Perhaps you should try some spelling variations:
xiaoyang tang » xiaoyan deng
xiaoping how » mapping how, xiaoping _, xiaoping shi
chia tan » chia lan, chen tan, chia wen
tan yang » dan yang, tan ying, tan yong
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 how) OR (xiaoyang tang)) chia tan yang jin data (hai OR hari) ;~.
• Adding a wildcard symbol may retrieve word variants: eng ((xiaoping how) or (xiaoyang tang)) chia tan yang jin data (hai or hari) ;*.