Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
van chat » cao chat
xanh tai » hanh tai, anh tai, vanh tai
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
cuu va » cuu ve

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 cao hoi. hieu van chat ((cuu va) or (cuu van)) xanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang cao hoi. hieu van chat ((cuu va) OR (cuu van)) xanh tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang cao hoi. hieu van chat ((cuu va) or (cuu van)) xanh tai cuu tre*.