Perhaps you should try some spelling variations:
ve triet » va trien, su triet
vien cac » vien dai, vien da, gian cac
nang xa » nang x, lang xa, nang ma
hoc van » hoc dan, hoc va, hoc vat
van anh » van thanh, tuan anh, van minh
sac ky » cac ky, sai ky
anh vi » hanh vi, anh va, anh ve
su sac » su sach, su cac, su xac
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: su sac ky ((nang xa) OR (mang may)) hoi. hieu ((vien cac) OR (vien bach)) hoc van anh vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((nang xa) or (mang may)) hoi. hieu ((vien cac) OR (vien bach)) hoc van anh vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) or (mang may)) hoi. hieu ((vien cac) OR (vien bach)) hoc van anh vi ve triet*.