To expand a bit, even saying 대약진 _daeyakjin_ "great leap forward" wouldn't have turned many eyes, because _dae_ is just a common prefix ("great") and _yakjin_ is also a common word meaning "leap forward, push forward, improve". The word simply doesn't have the same connotation of the English phrase "Great Leap Forward", which is almost always used for the infamous Chinese movement.

If a Korean speaker wanted to talk about that Chinese movement, they'd use the full name, 대약진운동 (大跃进运动): the great leap forward movement.