Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
hai cua » thai cua, dai cua, hoi cua
cach tu » cach thuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
cac tu » cac thu, cac du, tac tu
ma hoi » xa hoi, ma hoa, me hoi

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 y nang ((ma hoi) OR (mai hoi)). hieu ve ((cac tu) OR (cach tu)) va thanh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y nang ((ma hoi) or (mai hoi)). hieu ve ((cac tu) OR (cach tu)) va thanh hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang ((ma hoi) or (mai hoi)). hieu ve ((cac tu) OR (cach tu)) va thanh hai cua tre*.