Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
nang van » dang van, tang van, lang van
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
su triet » su viet, su tien, ve triet
van hoe » van hoa, van hoc, van hieu
su sac » su sach, su cac
su xac » pu xac, su cac

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) OR (su xac)) ky nang van hoe. hieu van nam thuc dan hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky nang van hoe. hieu van nam thuc dan hanh vi ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su xac)) ky nang van hoe. hieu van nam thuc dan hanh vi ((cua triet) or (su triet))*".