Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
cac duc » cao duc, cac dac, cac nuoc
van anh » van thanh, tuan anh, van minh
cua tre » cuu tre, cua triet, dua tren
anh vi » hanh vi, anh va, anh ve
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. hieu qua ((cac duc) OR (cac du)) van anh vi ((cua tre) OR (cua te))~.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. hieu qua ((cac duc) or (cac du)) van anh vi ((cua tre) or (cua te))*.