Perhaps you should try some spelling variations:
xiaoyang tang » xiaoyan deng
xiaoping tan » xiaojing a, xiaoping _, xiaoping how
chia daun » chia lan
daun yang » dan yang, du yang, tan yang
yang mind » yang cindy, yang jin, sang minh
mind dang » mind data
deng » den, eng, dung

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: deng ((xiaoping tan) OR (xiaoyang tang)) chia daun yang mind dang (hai OR hari) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "deng ((xiaoping tan) OR (xiaoyang tang)) chia daun yang mind dang (hai or hari) ;~".
• Adding a wildcard symbol may retrieve word variants: deng ((xiaoping tan) OR (xiaoyang tang)) chia daun yang mind dang (hai or hari) ;*.