Perhaps you should try some spelling variations:
wang daoping » wang xiaoping, wang danning, wang xiaobing
minh dang » minh cong, mich dann
tan chia » tuan china, than china, can china
dan sang » dan dana, dan qing, du sang
dan yang » daun yang, wang yang, yang yang
tan yang » tan ying, tan yong, tao yang
hai » hadi, haji, hari

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: wang daoping tan chia ((dan sang) OR (((dan yang) OR (tan yang)))) minh dang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang daoping tan chia ((dan sang) or (((dan yang) OR (tan yang)))) minh dang hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang daoping tan chia ((dan sang) or (((dan yang) OR (tan yang)))) minh dang hai ;*.