Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
sach phu » sach thu, sach phat, sach thue
dang xay » dang van
hieu van » hieu va, thien van, hieu ve
lam thuc » lam thuoc, am thuc, nam thuc
danh lai » danh sai, gianh lai, dinh lam
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
lai cua » dai cua, hai cua, lai chau
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: thu sach phu ((dang xay) OR (van xay)) hoi. ((hieu van) or (lieu va)) lam thuc va danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach phu ((dang xay) OR (van xay)) hoi. ((hieu van) OR (lieu va)) lam thuc va danh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach phu ((dang xay) OR (van xay)) hoi. ((hieu van) or (lieu va)) lam thuc va danh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach phu ((dang xay) OR (van xay)) hoi. ((hieu van) or (lieu va)) lam thuc va danh lai cua tre*.