trong những năm qua 
in the last few years, in recent years [ trong ] : during; in(side), among
[ những ] : (pluralizer); several, various; to be only; certain number of, some; as much as, as many as
[ năm ] : (1) five; (2) year
[ qua ] : after, by, through, over; last (week, day, etc.); to pass by, go across, cross over
Most Common Compounds Set 1:
Most Common Compounds Set 2 :