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