Muaj ntau yam khoom siv ntaub so ntswg sib txawv rau kev saib xyuas hauv tsev thiab kev siv rau kev tshaj lij hauv kev lag luam ntaub so ntswg.
Cov ntawv so quav, cov ntaub so ntswg ntsej muag thiab cov phuam da dej, tab sis kuj tseem muaj cov khoom ntawv rau cov chaw ua haujlwm, tsev so thiab cov chaw cob qhia tsuas yog ob peb yam piv txwv xwb.
Cov khoom siv tu cev uas tsis yog ntaub, xws li cov ntaub so quav menyuam thiab cov khoom saib xyuas poj niam kuj nyob hauv kev lag luam ntaub so ntswg thiab.
Cov khoom siv YA-VA muaj kev ua tau zoo heev ntawm kev ceev, ntev, thiab kev huv, tab sis nrog lub suab qis, lub neej ntev, thiab cov nqi kho qis.
