Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cuc ban » cua ban, cac ban, cuu ban
xuc ban » duc ban, quoc ban, xuat ban
va cham » va chat, va tham
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
ky lang » ky dang, ky tang, tay lang
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 lang) OR (ky nang)) van hoi. hieu va cham ((xuc ban) or (cuc ban)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((ky lang) OR (ky nang)) van hoi. hieu va cham ((xuc ban) OR (cuc ban)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ((ky lang) OR (ky nang)) van hoi. hieu va cham ((xuc ban) or (cuc ban)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach ((ky lang) OR (ky nang)) van hoi. hieu va cham ((xuc ban) or (cuc ban)) hanh vi cua te*.