Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
cac xuc » cam xuc, cac nuoc, chat xuc
hai cua » thai cua, dai cua, hoi cua
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang ((ma hoi) or (mai hoi)). hieu va cac xuc ((ban thanh) or (gia thanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang ((ma hoi) OR (mai hoi)). hieu va cac xuc ((ban thanh) OR (gia thanh)) hai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang ((ma hoi) or (mai hoi)). hieu va cac xuc ((ban thanh) or (gia thanh)) hai cua tre*.