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
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hanh ve » hanh vi, hanh va, hanh kem
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
cua te » cua tu

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 xa hoi. hieu va ((cac thuc) or (can thuc)) gia hanh ve ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu va ((cac thuc) OR (can thuc)) gia hanh ve ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu va ((cac thuc) or (can thuc)) gia hanh ve ((cuu tre) or (cua te))*.