kẻ cướp máy bay 
hijacker [ kẻ ] : individual, single, person, man; to write (on a sign)
[ cướp ] : to rob, loot, ransack, steal; robbery, theft
[ máy ] : (classifier for computers, radios); engine, machine, motor
[ bay ] : (1) to fly; (2) trowel; (3) you (plural); (4) to fade (of color)
Most Common Compounds Set 1:
Most Common Compounds Set 2 :