Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
wang tan » wang yan, wang dan, wang tao
wang ban » wang yan, wang dan, wang yang
hua chen » jui chen, yu chen, a chen
hong ghi » zhong zhi, hong g
hong hai » shang hai, zhong tai, dang hai
yan min » han min, kan min, yang mind

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

• Performing a fuzzy search may retrieve terms with similar spellings: yuan ((wang tan) OR (wang ban)) hua chen ((yan min) or (sang minh)) ((hong ghi) or (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan ((wang tan) OR (wang ban)) hua chen ((yan min) OR (sang minh)) ((hong ghi) OR (hong hai)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan ((wang tan) OR (wang ban)) hua chen ((yan min) or (sang minh)) ((hong ghi) or (hong hai)) ;".
• Adding a wildcard symbol may retrieve word variants: yuan ((wang tan) OR (wang ban)) hua chen ((yan min) or (sang minh)) ((hong ghi) or (hong hai)) ;*.