Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
gia hanh » gia thanh, giao hanh, gia anh
duc gia » quoc gia
cam duc » cam xuc, cao duc, pham duc
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y ((nang xa) or (nang x)) hoi. ((hieu ve) or (thien van)) cam duc gia hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang xa) OR (nang x)) hoi. ((hieu ve) OR (thien van)) cam duc gia hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang xa) or (nang x)) hoi. ((hieu ve) or (thien van)) cam duc gia hanh vi cua triet*.