Perhaps you should try some spelling variations:
ban hang » ngan hang
te sach » toc sach
sach ky » sac ky, sach y, sach ty
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((dang xa) or (van xay)) hoi. hieu ve cam xuc ((ban hanh) OR (ban hang)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((dang xa) OR (van xay)) hoi. hieu ve cam xuc ((ban hanh) OR (ban hang)) vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((dang xa) or (van xay)) hoi. hieu ve cam xuc ((ban hanh) OR (ban hang)) vai cua tre*".