trong trường hợp bất ngờ 
in an unexpected circumstance [ trong ] : during; in(side), among
[ trường ] : school, field
[ hợp ] : to suit, fit, be compatible, go together, unite
[ bất ] : (1) not, non-, un-; (2) type of card game
[ ngờ ] : to suspect, doubt
Most Common Compounds Set 1:
Most Common Compounds Set 2 :