Perhaps you should try some spelling variations:
wang danning » wang yanling, wang daoping, wang yangming
tuan china » wuhan china, can china, taiwan china
yang mind » yang cindy, yang jin, tang min
sang minh » kang minah, anh minh, song min
shang hai » shang kai, dang hai, chang ha
thanh vu » thanh van, thanh _

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 danning ((tuan china) OR (thanh vu)) daun ((yang mind) OR (sang minh)) shang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang danning ((tuan china) or (thanh vu)) daun ((yang mind) OR (sang minh)) shang hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang danning ((tuan china) or (thanh vu)) daun ((yang mind) OR (sang minh)) shang hai ;*.