Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dan danh » van danh, han danh, ban danh
thuc dan » thuc hanh, hoc dan, thuc vat
tam thuc » tham thuc, am thuc, nam thuc
hoc sach » hoc sinh, hoc cac, hoc anh
hieu va » lieu va
nang ma » tang ma, sang ma, mang may
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua

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: hoc sach y ((nang ma) OR (nang cao)) hoa. ((hieu va) OR (hieu qua)) tam thuc dan danh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y ((nang ma) OR (nang cao)) hoa. ((hieu va) or (hieu qua)) tam thuc dan danh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: hoc sach y ((nang ma) OR (nang cao)) hoa. ((hieu va) or (hieu qua)) tam thuc dan danh vi cua triet*.