Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham xuc » cam xuc, chat xuc, cham soc
chi chua » chi cua, cha chua, chay chua
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va danh » va dinh, va dan, va hanh
vi chua » va chua, vi khuan, ve chuan
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky sang ma hoi. hieu ve cham xuc va danh ((vi chua) OR (chi chua)) thiet~.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky sang ma hoi. hieu ve cham xuc va danh ((vi chua) or (chi chua)) thiet*.