không cánh mà bay 
to vanish without trace [ không ] : (1) no, not; (question tag); (2) air; (3) empty
[ cánh ] : (1) wing, pedal; (2) [CL for sails]
[ mà ] : but, which, where, that, and
[ bay ] : (1) to fly; (2) trowel; (3) you (plural); (4) to fade (of color)
Most Common Compounds Set 1:
Most Common Compounds Set 2 :