Lub sijhawm lav rau cov koob no yog IB xyoos txij li hnub xa khoom xa tuaj, thov xa mus rau koj daim ntawv them nqi lossis cov ntaub ntawv xa khoom los txiav txim siab hnub tsim nyog.HVHIPOT koom nrog lav rau tus neeg yuav khoom qub tias cov khoom no yuav tsis muaj qhov tsis xws luag hauv cov khoom siv thiab kev ua haujlwm raws li kev siv ib txwm muaj.