Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
cac ban » cac dan, cac van, can ban
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai
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: tu sach ky lang xa hoi. hieu ((ve cam) or (ve cac)) cac ban hanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu ((ve cam) OR (ve cac)) cac ban hanh vai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu ((ve cam) or (ve cac)) cac ban hanh vai ((cua tre) or (cua te))*.