Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
yang yao » yang yang, wang yan, yang yi
dan sang » dan yang, dan dana, dan qing
hong hai » shang hai, zhong tai, dang hai
chang ha » chang mae
yang ka » yang fan
shi dan » shi fan, shi ding, shi jian

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: yang ((yang ka) OR (yang yao)) shi dan sang minh ((hong hai) or (chang ha)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang ((yang ka) OR (yang yao)) shi dan sang minh ((hong hai) OR (chang ha)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((yang ka) OR (yang yao)) shi dan sang minh ((hong hai) or (chang ha)) ;*".