Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lky nang » ly nang, ke nang, may nang
cao thuc » cao thuoc, bao thuc, can thuc
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky nang) or (((lky nang) OR (ki nang)))) xa hoi. lieu va cao thuc va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky nang) OR (((lky nang) OR (ki nang)))) xa hoi. lieu va cao thuc va hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky nang) or (((lky nang) OR (ki nang)))) xa hoi. lieu va cao thuc va hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky nang) or (((lky nang) OR (ki nang)))) xa hoi. lieu va cao thuc va hanh vai cua triet*.