Perhaps you should try some spelling variations:
hang vai » hang va, hang tai, hang hai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve giao » te giao, viet giao, van giao
dua ban » dia ban, qua ban, mua ban
cua tre » cuu tre, cua triet, dua tren
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 ve giao ((dua ban) OR (cua ban)) hang vai ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ve giao ((dua ban) OR (cua ban)) hang vai ((cua tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ve giao ((dua ban) OR (cua ban)) hang vai ((cua tre) or (cua te))*.