Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh va, hanh tai, hanh van
nang van » dang van, tang van, lang van
hieu van » thien van, lieu va, hieu ve
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
van hoc » van hoa
hieu va » lieu va, hieu qua
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 nang van hoc. ((hieu van) OR (hieu va)) nam thuc dan ((hanh vai) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang van hoc. ((hieu van) OR (hieu va)) nam thuc dan ((hanh vai) OR (hanh vi)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang van hoc. ((hieu van) OR (hieu va)) nam thuc dan ((hanh vai) or (hanh vi)) cua triet*".