àm một cái gì cho bạn bè 
to do something for one’s friends [ một ] : one; a, an
[ cái ] : (1) [CL for most inanimate objects, isolated events]; (2) object, thing; (3) female; (4) main, principle; (5) solid substances in soup (as opposed to nước, the liquid, broth)
[ gì ] : what
[ cho ] : add, give; to, for; to say, claim; in order to; let, allow, permit
[ bạn ] : friend, associate, companion, comrade (in something)
[ bè ] : (1) party, faction, band, group, circle, gang, society, alliance; (2) raft, float
Most Common Compounds Set 1:
Most Common Compounds Set 2 :