đi dạo từng nhóm 
to walk about in groups [ đi ] : to go; (particle used to form commands, suggestions)
[ dạo ] : period, time (past), this time, these days; to stroll, walk
[ từng ] : (1) (present perfect marker); (2) each, one by one, every; (3) layer, level, step; (4) to experience; (5) by, for; (6) [CL counter for units of floors of stories], layer, story (of a building)
[ nhóm ] : to gather, group, collect; group
Most Common Compounds Set 1:
Most Common Compounds Set 2 :