Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hang nong » thang long, han tong
nong dan » cong dan, nong san, nguong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
hieu va » lieu va, hieu qua
tung va » trung va, tuong va, vung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (hieu va)) - thanh ((tung va) or (dung va)) hang nong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu va)) - thanh ((tung va) OR (dung va)) hang nong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hieu va)) - thanh ((tung va) or (dung va)) hang nong dan than cau*.