Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
ca thuc » can thuc, cay thuc, va thuc
thuc va » thuc vat, thuc dan, thuc day
danh di » danh du, xanh di, danh dien
hanh de » hanh ve, hanh kem
y nang » ky nang, ly nang, v nang
qua ca » qua cac, qua cua, qua cai
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y nang x hoi. hieu qua ca thuc va ((danh di) or (hanh de)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang x hoi. hieu qua ca thuc va ((danh di) OR (hanh de)) cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang x hoi. hieu qua ca thuc va ((danh di) or (hanh de)) cua te*.