nhìn vào mắt 
to look (sb) in the eye [ nhìn ] : to look (at), see, regard, appear
[ vào ] : at, on (date), in, to; to enter, go in, access
[ mắt ] : eye
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
nhìn vào mắt to look (sb) in the eye