Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
ban thanh » ban hanh, ban hang
te sach » toc sach
doi cua » dai cua, hoi cua
loc ban » lo ban, hoc ban, coc ban
cua tre » cua te, cuu tre, cua triet
sach va » sach xa, sach ha, sach dao
tang ma » mang may, tang van
va tang » va trang, van tang, ha tang
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai
ma hoi » mai hoi, xa hoi, ma hoa

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 va tang ma hoi. hieu ((va cam) or (va cao)) loc ban thanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach va tang ma hoi. hieu ((va cam) OR (va cao)) loc ban thanh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach va tang ma hoi. hieu ((va cam) or (va cao)) loc ban thanh doi cua tre*.