Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
duong van » cong van
duong anh » dang anh, trong anh
yang jui » yang judy, yang di, yang yi
ren sang » lee sang, le sang, ren weng
yang xi » yang di, yang yi
hua ren » hua chen
cong » congo, long, hong

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 jui) or (yang xi)) hua ren sang minh ((cong shu) or (((duong van) OR (duong anh)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang ((yang jui) OR (yang xi)) hua ren sang minh ((cong shu) OR (((duong van) OR (duong anh)))) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((yang jui) or (yang xi)) hua ren sang minh ((cong shu) or (((duong van) OR (duong anh)))) ;".
• Adding a wildcard symbol may retrieve word variants: yang ((yang jui) or (yang xi)) hua ren sang minh ((cong shu) or (((duong van) OR (duong anh)))) ;*.