hiệp nghị 
agreement; to meet and discuss, hold discussions, have talks [ hiệp ] : (1) to unite, join, come together; (2) round (in boxing), trip; (3) gorge, straits; (4) chivalrous
[ nghị ] : motion, resolution
Most Common Compounds Set 1:
Most Common Compounds Set 2 :
hiệp nghị thư agreement, convention