Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
hanh di » hanh vi, hang di, danh di
hanh de » hanh ve, hanh kem
luc va » duc va, tuc va, loc va
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: tu sach ky nang xa hoi. hieu qua cac ((luc va) OR (tuc xa)) ((hanh di) OR (hanh de)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu qua cac ((luc va) or (tuc xa)) ((hanh di) OR (hanh de)) cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu qua cac ((luc va) or (tuc xa)) ((hanh di) OR (hanh de)) cua te*.