Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
ban thanh » ban hanh, ban hang
sach thu » sach thieu, sach tham, cach thuc
thanh ve » hanh ve, thanh va, thanh vien
bang xa » lang xa, bang va, mang xa
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
toc ban » toc san, toc ba, hoc ban
ve cua » le cua, de cua, te cua

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 thu) or (sach thue)) bang xa hoi. hieu va cac toc ban thanh ve cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) bang xa hoi. hieu va cac toc ban thanh ve cua vat.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sach thue)) bang xa hoi. hieu va cac toc ban thanh ve cua vat*.