Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cuu thuc » cuu tac
vat hanh » vat thanh, van hanh, va hanh
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
y nang » ly nang, v nang, may nang
ma hoi » mai hoi, ma hoa, me hoi
va cuu » va cau, va chu, va huu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) ((ma hoi) OR (xa hoi)). lieu va cuu thuc vat hanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ky nang)) ((ma hoi) or (xa hoi)). lieu va cuu thuc vat hanh dai cua triet~".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ky nang)) ((ma hoi) or (xa hoi)). lieu va cuu thuc vat hanh dai cua triet*.