Peb cov khoom muaj peev xwm muaj xws li:
1. Qhov chaw rau hloov cov khoom tawg;
2. Kev pom zoo daim ntawv teev npe rau cov khoom seem;
3. Kev xa khoom sai rau cov khoom txav ceev;
4. Kev pab tswv yim pub dawb rau tag nrho cov khoom seem.
Peb cov khoom muaj peev xwm muaj xws li:
1. Qhov chaw rau hloov cov khoom tawg;
2. Kev pom zoo daim ntawv teev npe rau cov khoom seem;
3. Kev xa khoom sai rau cov khoom txav ceev;
4. Kev pab tswv yim pub dawb rau tag nrho cov khoom seem.