Perhaps you should try some spelling variations:
ban hanh » ban hang
sang tao » hang tai
vu cham » va cham, vu kham, tu cham
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
hieu vu » hieu va, hieu ve, hieu su
sach ty » sach y, sach thu, xach tay
tao hoi » tao khoi, tao boi, tay hoi
sach tu » sach thu, cach tu, sach uu
cua tre » cua te, cuu tre, cua triet

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 tu)) sang tao hoi. hieu vu cham soc ((ban hanh) OR (va danh)) lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach tu)) sang tao hoi. hieu vu cham soc ((ban hanh) or (va danh)) lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach tu)) sang tao hoi. hieu vu cham soc ((ban hanh) or (va danh)) lai cua tre*.