Perhaps you should try some spelling variations:
cau trung » cau truong, cac trung, cao trung
trung van » truong van, trong van, trung va
va triet » va thiet, va trien, cua triet
ve triet » va trien, su triet
hieu ve » hieu van
hieu va » lieu va, hieu qua
van anh » van thanh, tuan anh, van minh
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
anh vi » hanh vi, anh va, anh 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 sach y nang xa hoi. ((hieu ve) OR (hieu va)) cau trung van anh vi ((va triet) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. ((hieu ve) or (hieu va)) cau trung van anh vi ((va triet) OR (ve triet))~".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((hieu ve) or (hieu va)) cau trung van anh vi ((va triet) OR (ve triet))*.