từng thứ một 
each item [ 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)
[ thứ ] : (1) (ordinalizer); order, type, suit, kind; (2) thing, item
[ một ] : one; a, an
Most Common Compounds Set 1:
Most Common Compounds Set 2 :