nhóm khủng bố 
terrorist group [ nhóm ] : to gather, group, collect; group
[ khủng ] : to be afraid, fear
[ bố ] : (1) father; chap, fellow, guy, buddy; (2) to terrorize; (3) to spread, disseminate, publish; (4) cloth
Most Common Compounds Set 1:
Most Common Compounds Set 2 :