Perhaps you should try some spelling variations:
cham sac » cham soc, pham sach, cap sac
van quan » van ban
van tuan » van ban, anh tuan
vai cua » dai cua, hai cua, lai cua
vu cham » va cham, vu kham, tu cham
sach ty » sach tu, sach thu, xach tay
hieu vu » hieu va, hieu ve, hieu su
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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: tu ((sach ty) OR (sach y)) nang ma hoi. hieu vu cham sac ((van tuan) OR (van quan)) vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach y)) nang ma hoi. hieu vu cham sac ((van tuan) OR (van quan)) vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) nang ma hoi. hieu vu cham sac ((van tuan) OR (van quan)) vai cua tre*.