Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
qua cau » quan cau, qua cac, qua ca
va hanh » va thanh, va danh, ban hanh
vi ve » va ve, gi ve, ve ve

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky dang xa hoi. hieu qua cau truc ((va hanh) OR (van hanh)) vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky dang xa hoi. hieu qua cau truc ((va hanh) OR (van hanh)) vi ve triet*.