Perhaps you should try some spelling variations:
wang yuan » wang yuhan, wang yan, fang yuan
yang minh » sang minh, yang mind, kang minah
yuan kai » yuan kang, yuan fei, tan kai
kai chai » ka chai, goi chai, kim chai
chai dan » chai onn, chai tam, shi dan
dan yang » daun yang, tan yang, wang yang
hong hai » shang hai, zhong tai, dang hai
chang ha » chang mae

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuan kai chai dan yang minh ((hong hai) or (chang ha)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuan kai chai dan yang minh ((hong hai) OR (chang ha)) ;*.