Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
vat danh » va danh, luat danh, nhat danh
van danh » van doanh, van anh, van hanh
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ty) or (sach thue)) lang xa hoi. hieu van nam thuc ((vat danh) OR (van danh)) va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach thue)) lang xa hoi. hieu van nam thuc ((vat danh) OR (van danh)) va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ty) or (sach thue)) lang xa hoi. hieu van nam thuc ((vat danh) OR (van danh)) va cuu tre".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) or (sach thue)) lang xa hoi. hieu van nam thuc ((vat danh) OR (van danh)) va cuu tre*.