quan hệ song phương 
bilateral relations [ quan ] : (1) official, officer; (2) franc (unit of currency); (3) coffin; (4) sense
[ hệ ] : branch, system; generation
[ song ] : (1) but, however, still, nevertheless; (2) pair, couple; fellow (worker, classmate); (3) window, bar
[ phương ] : (1) direction, distance, (cardinal) point (of the compass); (2) method, way, means, facility; (3) perfume, fragrant; (4) square; (5) hindrance, harm; (6) to compare; (7) measure of grain
Most Common Compounds Set 1:
Most Common Compounds Set 2 :