Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, cay thuc
can thuc » dan thuc, van thuc, cay thuc
gia hanh » gia thanh, giao hanh, gia anh
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
hanh ve » hanh vi, hanh va, hanh kem
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
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: so sach y nang x hoi. hieu va ((cac thuc) or (can thuc)) gia hanh ve ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang x hoi. hieu va ((cac thuc) OR (can thuc)) gia hanh ve ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: so sach y nang x hoi. hieu va ((cac thuc) or (can thuc)) gia hanh ve ((cua tre) or (cua te))*.