Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh sua » hinh su, hanh va, hanh tu
va hanh » van hanh, va thanh, va danh
van cau » van dau, van hau, van chat
su sach » so sach, vu sach
van cam » van nam, van lam, van dam
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang
loc va » hoc va, luc va
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) OR (ly nang)) x hoi. hieu ((van cam) OR (van cau)) loc va hanh sua va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (ly nang)) x hoi. hieu ((van cam) or (van cau)) loc va hanh sua va triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (ly nang)) x hoi. hieu ((van cam) or (van cau)) loc va hanh sua va triet*.