Perhaps you should try some spelling variations:
sach phu » sach phat, sach thue, sach phap
dinh lai » dinh lam, dinh lap, dinh tai
lam thuc » lam thuoc, am thuc, nam thuc
cay phoi » cap phoi, tay hoi, cay cho
sach thu » sach thue, sach thieu, sach tham
xay hoi » xa hoi, tay hoi, gay thoi
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
va lam » van lam, va lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach phu) OR (sach thu)) dang ((xay hoi) or (cay phoi)). hieu va lam thuc va dinh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach phu) OR (sach thu)) dang ((xay hoi) OR (cay phoi)). hieu va lam thuc va dinh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach phu) OR (sach thu)) dang ((xay hoi) or (cay phoi)). hieu va lam thuc va dinh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach phu) OR (sach thu)) dang ((xay hoi) or (cay phoi)). hieu va lam thuc va dinh lai cua tre*.