Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
ban thanh » ban hanh, ban hang
thuc ban » thuoc ban, thuc dan, thu ban
dang xay » dang van, van xay
sach thu » sach thue, sach thieu, sach tham
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
hieu va » lieu va, hieu qua
xang xa » lang xa, mang xa, ang xa
cua te » cua tu
va am » va lam, va cam

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 thu ((xang xa) or (dang xay)) hoi. hieu va am thuc ban thanh doi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu ((xang xa) OR (dang xay)) hoi. hieu va am thuc ban thanh doi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach thu ((xang xa) or (dang xay)) hoi. hieu va am thuc ban thanh doi ((cua tre) or (cua te))*.