Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
lai hoi » dai hoi, lai hoa, lai roi
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
me hoi » le hoi
va tam » van tam, va tham, va tap
va tac » va cac
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang ((me hoi) or (lai hoi)). lieu ((va tam) or (va tac)) thuc va hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ((me hoi) OR (lai hoi)). lieu ((va tam) OR (va tac)) thuc va hanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang ((me hoi) or (lai hoi)). lieu ((va tam) or (va tac)) thuc va hanh di cua triet*.