Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cam duc » cao duc, pham duc, nam duoc
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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: toc sach y nang ((xa hoi) OR (mai hoi)). hieu ve ((cam duc) OR (cam xuc)) va hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang ((xa hoi) or (mai hoi)). hieu ve ((cam duc) OR (cam xuc)) va hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ((xa hoi) or (mai hoi)). hieu ve ((cam duc) OR (cam xuc)) va hanh vi cua triet*.