gập sách lại 
to close a book [ gập ] : to fold, close (a book)
[ sách ] : (1) book; (2) list (of names); (3) to demand, insist; (4) policy; (5) mountain village
[ lại ] : (1) again; against, over again, back towards; resume, re-; (2) to come, reach, get to; (3) (indicates something is contrary to expectations)
Most Common Compounds Set 1:
Most Common Compounds Set 2 :