Perhaps you should try some spelling variations:
sach tham » sach nha
sach thu » sach thue, sach thieu, cach thuc
hieu van » hieu va, thien van, lieu va
lam thuc » lam thuoc, am thuc, nam thuc
danh hai » dang hai, lanh hai, manh hai
lang xa » lang ha, dang xay, lang van
van lam » van nam
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach thu) OR (sach tham)) lang xa hoi. hieu van lam thuc va danh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach thu) OR (sach tham)) lang xa hoi. hieu van lam thuc va danh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach thu) OR (sach tham)) lang xa hoi. hieu van lam thuc va danh hai cua tre*.