Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
te sach » toc sach
van cau » van dau, van hau, van chat
cau hoc » cau hoi, cau hoa, cao hoc
va dinh » van dinh, va kinh, va tinh
dinh de » dinh ve, dinh du, dinh le
v nang » va nang, vu nang, van nang
de cua » le cua, te cua, dieu 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: te sach ((v nang) OR (cam nang)) xa hoi. hieu van cau hoc va dinh de cua triet~.
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) or (cam nang)) xa hoi. hieu van cau hoc va dinh de cua triet*.