Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
quoc bao » quoc oai, quoc va
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
hoc bao » hoc cao, hoc bai, hoc bo
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, ma hoa, me hoi
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang ((ma hoi) or (xa hoi)). hieu ve cao ((quoc bao) or (hoc bao)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ((ma hoi) OR (xa hoi)). hieu ve cao ((quoc bao) OR (hoc bao)) thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ((ma hoi) or (xa hoi)). hieu ve cao ((quoc bao) or (hoc bao)) thanh tai cua tre*.