Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang
ve bac » ve ban, he bac, va bac
ve cac » va cac, vien cac
ve bao » te bao, va bao
bo van » vo van, so van, do van
x hoi » xa hoi, o hoi, x ho
vi ve » va ve, gi ve, ve ve

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 x hoi. hieu ((((ve bac) OR (ve cac))) OR (ve bao)) bo van hanh vi ve triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((((ve bac) or (ve cac))) or (ve bao)) bo van hanh vi ve triet*.