Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
ban hanh » ban hang
cham duc » pham duc, cham soc, pham duy
lang van » dang van, tang van, hoang van
thu bang » thu ban, thu hang, chu bang
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
duc ban » duc tan, duc van, dua ban
su dang » su dung
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su dang) or (thu bang)) ky ((dang xay) or (lang van)) hoi. hieu vu cham duc ban hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su dang) OR (thu bang)) ky ((dang xay) OR (lang van)) hoi. hieu vu cham duc ban hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su dang) or (thu bang)) ky ((dang xay) or (lang van)) hoi. hieu vu cham duc ban hanh vi cua triet*.