Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
can thuc » dan thuc, van thuc, cay thuc
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. ((hieu ve) OR (hieu va)) can thuc va hanh vi van triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. ((hieu ve) or (hieu va)) can thuc va hanh vi van triet*.