Stop in for a cup of coffee

I really have no answer for that, they tell me what root but they tell me in Vietnamese. So I don't really get it
Yes most of you know that I have learned the Vietnamese language. But I do not know everything yet. It is a long slope upwards to learn it all. Everyday I'm here and I'm not speaking English with anybody I'm learning more. In a year or two they won't be able to say anything that I don't understand