Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
va lam » van lam, va lap
di cua » dai cua, doi cua, de cua
le cua » ly 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 ty xang xa hoi. hieu va lam thuc va hanh ((di cua) or (le cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. hieu va lam thuc va hanh ((di cua) OR (le cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. hieu va lam thuc va hanh ((di cua) or (le cua)) tre*.