Cov khoom xuas tes ua yog ib kauj ruam ua ntej ntawm lwm yam khoom. Dab tsi xuas tes ua ua tshwj xeeb yog nws tsim. Muaj ntau yam kev xaiv thiab hom kev tsim cov khoom siv tes ua.

Qhia 1-12 ntawm 88 cov ntsiab lus