Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
chai tan » chai tam, chai onn
tan sang » tan yang, tang tang, tan hong
hong hai » shang hai, zhong tai, dang hai
chang ha » chang mae
ka chai » ka chuan, kim chai
yan ka » yang ka, yuan kai
wang » wing, lang

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