my waifu is half vietnamease, she can speak english, bm, mandarin, vietnamease, cambodian, lol. last time she used to study in malaysia
but we sometime go visit her father side family in vn.
among 10 of her cousins, only 1 can speak english fluently and another 2 more can understand simple english.
the chances of you finding a vn girl speaking english is much lower than the chance of you finding a vn girl which speaks cantonese / mandarin.
there are few district in vietnam which speaks cantonese, inherit from their ancestors from china.
ps: vn girls are guuding, sometimes her cousins make me stare at their goods, they no wear bra when at home, lol.