Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
qua cham » qua hai, qua cac, va cham
cham duc » pham duc, cham soc, pham duy
sach tu » sach thu, cach tu, sach ty
hanh di » hanh vi, hanh de, hang di
tu van » tu va
van xa » van xay, van ha, dan xa
cua te » cua tu

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 tu van xa hoi. hieu qua cham duc va ((hanh di) OR (hanh kem)) cua te~.
• Adding a wildcard symbol may retrieve word variants: hoc sach tu van xa hoi. hieu qua cham duc va ((hanh di) or (hanh kem)) cua te*.