Perhaps you should try some spelling variations:
ban thanh » ban hanh
ban hang » ngan hang
te sach » toc sach
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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 ((tang ma) or (lang xa)) hoi. hieu ve cam xuc ((ban thanh) OR (ban hang)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((tang ma) OR (lang xa)) hoi. hieu ve cam xuc ((ban thanh) OR (ban hang)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((tang ma) or (lang xa)) hoi. hieu ve cam xuc ((ban thanh) OR (ban hang)) vi cua tre*".