Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cac tac » cac bac, cac dac, cac tai
cac toc » cac toi, cac nuoc, cac thoi
va hanh » van hanh, va thanh, va danh
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: su sach ty nang x hoi. thien van ((cac tac) OR (cac toc)) va hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. thien van ((cac tac) or (cac toc)) va hanh vi cua triet*.