phòng khi chiến tranh bùng nổ 
if, in case war breaks out [ phòng ] : (1) room, office; (2) to prevent
[ khi ] : occasion, time (when something happens), when, at the time of, if
[ chiến ] : (1) conflict, war; (2) good, terrific
[ tranh ] : (1) picture, painting; (2) to compete, contend, dispute
[ bùng ] : to flare up
[ nổ ] : to explode, blow up, burst, shoot
Most Common Compounds Set 1:
Most Common Compounds Set 2 :