Perhaps you should try some spelling variations:
sang mai » sang ma, sang tai, lang mai
can thuc » dan thuc, van thuc, cay thuc
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
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
sach v » sach va, sach y, sach 2
v sang » va sang, ve sang, _ sang
vi va » vi van, vai va, vu va

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 v sang mai hoi. ((hieu ve) OR (hieu va)) can thuc va hanh vi va triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach v sang mai hoi. ((hieu ve) or (hieu va)) can thuc va hanh vi va triet*.