Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac thuc » cach thuc, cac thu, can thuc
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
may hoi » may thoi, tay hoi, mai hoi
va hanh » va thanh, ban hanh, dao hanh
va danh » va dinh, va dan, dia danh
y mang » cay mang

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: tu sach y mang may hoi. lieu va cac thuc ((((va hanh) OR (van hanh))) OR (va danh)) dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y mang may hoi. lieu va cac thuc ((((va hanh) OR (van hanh))) or (va danh)) dai cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach y mang may hoi. lieu va cac thuc ((((va hanh) OR (van hanh))) or (va danh)) dai cua triet*.