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
sach va » sach xa, sach ha, sach dao
va nang » van nang, da nang, cam nang
hieu va » lieu va, hieu qua
cau xuc » cam xuc, cau luc, cau truc
va hanh » va thanh, va danh, ban hanh
doi cua » dai cua, hoi cua, dong cua
va cau » van cau, va cac, va dau
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 va nang x hoi. hieu va cau xuc ((va hanh) OR (van hanh)) doi cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach va nang x hoi. hieu va cau xuc ((va hanh) or (van hanh)) doi cua triet*.