Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, hieu ve
nang van » dang van, tang van, lang van
van hoe » van hoa, van hoc, van hieu
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
su sac » su cac, su xac

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