Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh hoi » hanh thoi, hanh noi, hanh hoa
ban hanh » ban hang
hoc sach » hoc sinh, hoc anh
hoc cac » hoc cao
xay hoi » xa hoi, tay hoi, cay phoi
van cac » van hac, van cau, van bac
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
hoi cua » hoi chuc
so sanh » do sanh
ty van » ly van, ta van

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) or (((hoc sach) OR (hoc cac)))) ty van xay hoi. hieu van cac duc ban hanh hoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (((hoc sach) OR (hoc cac)))) ty van xay hoi. hieu van cac duc ban hanh hoi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) or (((hoc sach) OR (hoc cac)))) ty van xay hoi. hieu van cac duc ban hanh hoi cua triet*".