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