Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
va cam » va cac, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty ((mang may) or (lang xa)) hoi. hieu ((va cam) or (va cham)) duc va thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((mang may) OR (lang xa)) hoi. hieu ((va cam) OR (va cham)) duc va thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((mang may) or (lang xa)) hoi. hieu ((va cam) or (va cham)) duc va thanh tai cua tre*.