Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, vuc van
ve cac » va cac, vien cac
va cao » va cac, va co, va dao
vi cua » vai cua, di cua
x hoi » o hoi, x ho, 5 hoi

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 ky nang ((x hoi) or (xa hoi)). hieu ((ve cac) or (va cao)) xuc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ((x hoi) OR (xa hoi)). hieu ((ve cac) OR (va cao)) xuc van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((x hoi) or (xa hoi)). hieu ((ve cac) or (va cao)) xuc van hanh vi cua triet*.