Perhaps you should try some spelling variations:
cau trung » cau truong, cac trung, cao trung
trung van » truong van, trong van, trung va
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
sach lo » sach dao, sach doi, sach hoi
lo nang » ho nang, ly nang, loai nang
hieu ve » hieu van
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
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: vu sach lo nang x hoi. ((hieu ve) OR (hieu va)) cau trung van hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: vu sach lo nang x hoi. ((hieu ve) or (hieu va)) cau trung van hanh vi cua triet*.