Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ban vo » ban voi, ban va, ban ve
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. ((hieu ve) OR (lieu va)) ban vo van hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. ((hieu ve) or (lieu va)) ban vo van hanh vi cua triet*.