Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
duoc ban » duc ban, quoc ban, buoc ban
lang van » dang van, tang van, hoang van
tai cua » thai cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
va tao » va bao, va cao, va tac

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) or (toc sach)) y ((nang ma) or (lang van)) hoi. hieu va tao duoc ban thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y ((nang ma) OR (lang van)) hoi. hieu va tao duoc ban thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) y ((nang ma) or (lang van)) hoi. hieu va tao duoc ban thanh tai cua tre*.