chính sách bế quan tỏa cảng 
the closed-door policy [ chính ] : main, principle, chief; self, own; exactly, just, precisely
[ sách ] : (1) book; (2) list (of names); (3) to demand, insist; (4) policy; (5) mountain village
[ bế ] : (1) to carry in one’s arms (a child), pick up; (2) close
[ quan ] : (1) official, officer; (2) franc (unit of currency); (3) coffin; (4) sense
[ tỏa ] : to spread, diffuse, pervade, radiate, emit, send out
[ cảng ] : (sea) port, harbor
Most Common Compounds Set 1:
Most Common Compounds Set 2 :