Oh, thuong thi trong system no co san may cai font, chi chon roi apply thui. Neu ko co san thi bac len google search may cai font unicode ve roi copy vao trong folder ./fontchanger/ cua the sd (luc cai fontchanger no tu dong tao folder do nhung bi an, bac vao folder option cua windows explorer chinh de hien ra folder va file an nhe). Sau do vao fontchanger, no tu tim va show trong do, chi can chon font roi apply la co.
PS: dang o trong lop nen online bang ipad, ko go tieng viet duoc. Neu bac ko tim duoc font thi de minh up len day cung duoc.