Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, mang may
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
va nam » van nam, ha nam, va nay
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky ((nang ma) or (nang cao)) hoi. lieu va nam thuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky ((nang ma) OR (nang cao)) hoi. lieu va nam thuc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky ((nang ma) or (nang cao)) hoi. lieu va nam thuc va hanh vi cua triet*.