cố giữ bình tỉnh 
to try to keep calm, try to stay cool [ cố ] : (1) to make an effort, try (very hard); (2) great grandfather; (3) to pawn; (4) reason; (5) old, former, late (deceased); (6) intentional, premeditated; (7) firm, strong; (8) innate, original; (9) to look after, care for, turn one’s head
[ giữ ] : to keep, hold, stay, guard, maintain, protect, reserve
[ bình ] : (1) average, plain, level, equal, balanced, calm, peaceful; (2) bottle, jar, pot, vase; (3) to criticize, comment on, examine; (4) marsh lentil, duckweed, water hyacinth
[ tỉnh ] : (1) province, prefecture; city; (2) to wake up, awaken, recover consciousness
Most Common Compounds Set 1:
Most Common Compounds Set 2 :