Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
phap thuc » phap thu, phap hoc, phap tu
doc sach » hoc sach, toc sach, nuoc sach
vat hanh » vat thanh, van hanh, va hanh
hanh vai » hanh vi, hanh va, hanh tai
ty nang » ty xang, ty hang, ly nang
hieu vi » hieu voi, hieu va, hieu ve
vi phap » va phap, vi pham, vi phan
vai cua » dai cua, hai cua, lai 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: doc sach ((ty nang) OR (ky nang)) xa hoi. hieu vi phap thuc vat hanh vai cua triet~.
• Adding a wildcard symbol may retrieve word variants: doc sach ((ty nang) or (ky nang)) xa hoi. hieu vi phap thuc vat hanh vai cua triet*.