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
kim chai » ka chai
hong hai » shang hai, zhong tai, dang hai
chang ha » chang mae
yan kim » tan kim, yap kim, yong kim

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