Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
hieu van » hieu va, thien van, lieu va
danh di » danh du, xanh di, danh dien
danh vi » dinh vi, danh va, danh viet
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
van lam » van nam
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo

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 lang xa hoi. hieu van lam thuc vat ((((danh vi) OR (danh di))) or (hanh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty lang xa hoi. hieu van lam thuc vat ((((danh vi) OR (danh di))) OR (hanh vi)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty lang xa hoi. hieu van lam thuc vat ((((danh vi) OR (danh di))) or (hanh vi)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty lang xa hoi. hieu van lam thuc vat ((((danh vi) OR (danh di))) or (hanh vi)) cuu tre*.