rào trước đón sau 
to be very careful with one’s words [ rào ] : fence; to enclose, shut in
[ trước ] : before, in front, previously; faced with, in the face of, ahead of
[ đón ] : to greet, meet, welcome (on arrival), pick up
[ sau ] : again; next; after, behind, afterwards
Most Common Compounds Set 1:
Most Common Compounds Set 2 :