Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
qua cai » qua hai, qua ca, quan cau
qua cac » cua cac
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
tuc va » thuc va, truc va, tuc xa
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 ((qua cai) or (qua cac)) tuc va hanh vi ((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 ((qua cai) OR (qua cac)) tuc va hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu ((qua cai) or (qua cac)) tuc va hanh vi ((cua tre) or (cua te))*.