Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cac ban » cac dan, cac van, can ban
xuc ban » duc ban, cuc ban, quoc ban
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
tang xa » trang xa, lang xa, tang ha
tang ma » mang may, tang van
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky ((tang xa) or (tang ma)) hoi. hieu va cham ((xuc ban) or (cac ban)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky ((tang xa) OR (tang ma)) hoi. hieu va cham ((xuc ban) OR (cac ban)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky ((tang xa) or (tang ma)) hoi. hieu va cham ((xuc ban) or (cac ban)) hanh vi cua te*.