nhớ mang máng 
to remember vaguely, dimly [ nhớ ] : to remember, recall, miss
[ mang ] : to carry, wear, bear
[ máng ] : (1) gutter, rainspout; (2) to hang up clothes
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
nhớ mang máng to remember vaguely, dimly