English Nguyen English most common Vietnamese family name http://en.wikipedia.org/wiki/Nguyen English http://en.wikipedia.org/wiki/Nguyen English English Nguyen most common surname in Vietnam http://en.wikipedia.org/wiki/Nguyen most common surname in Vietnam English English English English English Nguyen most common Vietnamese family name Nguyễn Nguyen Wikipedia English http://en.wikipedia.org/wiki/Nguyen