Perhaps you should try some spelling variations:
chai wang » chen wang
yang mind » yang cindy, yang jin, tang min
sang minh » kang minah, anh minh, song min
shang hai » shang kai, dang hai, chang ha
kim chai » ka chai
yan kim » tan kim, yap kim, yong kim
hong » long
tan » than

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 yan kim chai wang ((yang mind) OR (sang minh)) ((shang hai) OR (hong tan)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan kim chai wang ((yang mind) OR (sang minh)) ((shang hai) or (hong tan)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan kim chai wang ((yang mind) OR (sang minh)) ((shang hai) or (hong tan)) ;*.