trở nên thân thiết 
to become friends [ trở ] : to return; to hamper, hinder; to turn, change
[ nên ] : (1) ought to, should, had better; (2) candle; (3) so, that’s why, consequently, so, therefore, (4) become
[ thân ] : (1) intimate, close, dear; (2) person, body; (3) ninth year of the Chinese zodiac (“monkey”)
[ thiết ] : to display, show
Most Common Compounds Set 1:
Most Common Compounds Set 2 :