Perhaps you should try some spelling variations:
lky nang » ly nang, ki nang, ke nang
cao thuc » cao thuoc, bao thuc, can thuc
hanh vai » hanh vi, hanh va, hanh tai
va triet » va thiet, va trien, ve triet
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
va cao » va cac, va co, va dao
vai va » mai va, dai va, hai va

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)) xa hoi. lieu va cao thuc va hanh vai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky nang) OR (lky nang)) xa hoi. lieu va cao thuc va hanh vai va triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((ky nang) or (lky nang)) xa hoi. lieu va cao thuc va hanh vai va triet*.