Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
so sach » so sanh, bo sach, co sach
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
ve cac » va cac, vien cac
o hoi » co hoi, o hoc, o hai

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