Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
lky nang » ly nang, ki nang, ke nang
sinh dai » sinh thai, si dai, sinh vat
va nham » va cham, va tham, va nha
thuc va » thuc vat, thuc dan, thuc day
va sinh » va kinh, va tinh, vi sinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((ky nang) or (lky nang)) xa hoi. lieu va nham thuc va sinh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((ky nang) OR (lky nang)) xa hoi. lieu va nham thuc va sinh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((ky nang) or (lky nang)) xa hoi. lieu va nham thuc va sinh dai cua triet*.