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
hanh hai » thanh hai, nhanh hai, hang hai
dang xa » lang xa, dang ha, dang va
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
hai cua » thai cua, dai cua, hoi cua
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

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