Kev Sab Laj

Muab cov neeg siv khoom nrog cov kws tshaj lij, kev thov thiab cov nqi sib tham (ntawm email, xov tooj, whatsapp, whatApp, dechat, skype, thiab lwm yam). Teb sai rau cov lus nug uas cov neeg siv kev txhawj xeeb txog.