Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh dai » hanh tai, hanh dao, vanh dai
vu nang » vuc nang, va nang, vu dang
tu sach » thu sach, su sach, te sach
van cam » van nam, van lam, van cau
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, may nang
v nang » va nang, van nang, voi nang
luc va » duc va, tuc va, loc va

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) OR (((v nang) OR (vu nang)))) xa hoi. hieu van cam luc va hanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (((v nang) OR (vu nang)))) xa hoi. hieu van cam luc va hanh dai cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (((v nang) OR (vu nang)))) xa hoi. hieu van cam luc va hanh dai cua triet*.