Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
danh sat » danh bat, canh sat, danh sai
lam thuc » lam thuoc, am thuc, nam thuc
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
sach ky » sach y, sach ty, sach kem
hieu va » hieu qua
nang co » nang cao, nang doc, nang noi
co hoi » co hoc, co loi
sac ky » cac ky, sai ky
sat su » dat su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang co hoi. ((hieu va) OR (lieu va)) lam thuc va danh sat su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sac ky)) nang co hoi. ((hieu va) OR (lieu va)) lam thuc va danh sat su triet~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sac ky)) nang co hoi. ((hieu va) OR (lieu va)) lam thuc va danh sat su triet*.