Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ve triet » va trien, su triet
sanh ky » hanh ky, sang ky, nganh ky
va dinh » van dinh, va kinh, va tinh
so sanh » do sanh
va hanh » van hanh, va thanh, va danh
cac duc » cac du, cao duc, cac dac
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
ky van » ly van, ty van, ky va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky van xay hoi. hieu va cac duc ((va hanh) or (va dinh)) di ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky van xay hoi. hieu va cac duc ((va hanh) OR (va dinh)) di ((cua triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: so sanh ky van xay hoi. hieu va cac duc ((va hanh) or (va dinh)) di ((cua triet) or (ve triet))*.