tsis siv neeg Performance index

Yuav ua li cas ua tsis siv neeg Performance index nyob rau hauv Lo Lus? [YOOJ YIM]

Ua kom tag nrho koj cov kev ua haujlwm tau teeb tsa zoo thiab muab tus nyeem ntawv qhov chaw mus ncaj qha rau ntawm ntu ...