Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
cua triet » cua viet, su triet
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, va trien, ve triet
cao hoi » cau hoi, co hoi, cao hoc
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang cao hoi. lieu va tham thuc va hanh vi ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang cao hoi. lieu va tham thuc va hanh vi ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang cao hoi. lieu va tham thuc va hanh vi ((cua triet) OR (va triet))*.