Cov ntaub ntawv tiag tiag tuaj yeem sau tau thiab tom qab ntawd muab tso rau hauv kev saib xyuas ntawm cov tub ceev xwm tom qab kev txheeb xyuas;
Cov ntaub ntawv pov thawj ntawm kev nkag mus nrog qib kev ruaj ntseg siab;
Tsis siv neeg tau txais cov khoom xeem los tiv thaiv kev tswj xyuas cov khoom xeem.