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