Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
sach ky » sac ky, sach y, sach ty
va tham » van tham, va cham, va thanh
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
goc va » loc va, doc va, uoc va
di cuu » di cau, di cua, dinh cuu
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. lieu va tham ((goc va) or (hoc va)) hanh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang x hoi. lieu va tham ((goc va) OR (hoc va)) hanh di cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang x hoi. lieu va tham ((goc va) or (hoc va)) hanh di cuu tre*.