Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
bai hoc » dai hoc
va danh » va dinh, va dan, va hanh
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: su sach y ((nang ma) OR (sang ma)) hoi. lieu va bai hoc va danh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang ma) or (sang ma)) hoi. lieu va bai hoc va danh vi cua triet*.