Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
van hanh » van thanh, ban hanh, van anh
cam luc » cam xuc, cau luc
va hanh » va thanh, va danh, ban hanh
su sach » so sach, vu sach
hieu ve » hieu van
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
sua va » suat va, vua va, xua va
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: su sach y nang x hoi. ((hieu ve) OR (hieu va)) cam luc ((va hanh) OR (van hanh)) sua va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang x hoi. ((hieu ve) or (hieu va)) cam luc ((va hanh) OR (van hanh)) sua va triet~".
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. ((hieu ve) or (hieu va)) cam luc ((va hanh) OR (van hanh)) sua va triet*.