like: hiệu quả rất là thấp
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
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exact:
VNEN 
hiệu quả rất là thấp * ☊ 
the results are very poor * ☊
[ hiệu ] : store, shop; sign, signal, mark, brand, trademark
[ quả ] : (1) fruit, result, [CL for fruits, mountains, hills, balls]; (2) exactly, honestly; honest, exact, true; (3) betel box, round lacquered box; (4) few, sparse, widowed; (5) courageous
[ rất ] : very, quite
[ là ] : that; to be
[ rất ] : very