Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
hieu ve » hieu va
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
bo van » vo van, so van, do van
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. ((hieu ve) OR (hieu van)) bac bo van hanh vai cua triet~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. ((hieu ve) OR (hieu van)) bac bo van hanh vai cua triet*.