Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang van » dang van, tang van, lang van
hieu van » hieu va, thien van, lieu va
vat hanh » vat thanh, van hanh, va hanh
van hoe » van hoa, van hoc, van hieu
su sac » su sach, su cac
su xac » pu xac, su cac
van am » van nam, van lam, van dam
vi cua » vai cua, di cua
thuc » thu

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 sac) OR (su xac)) ky nang van hoe. hieu van am thuc vat hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su xac)) ky nang van hoe. hieu van am thuc vat hanh vi cua triet*.