rất quan tâm về 
to pay a lot of attention to [ rất ] : very, quite
[ quan ] : (1) official, officer; (2) franc (unit of currency); (3) coffin; (4) sense
[ tâm ] : mind, center, heart
[ về ] : (1) about, concerning, regarding; (2) in, towards; (3) to come back, return, go
Most Common Compounds Set 1:
Most Common Compounds Set 2 :