Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
vai cua » dai cua, hai cua, lai cua
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
ve cac » va cac, vien cac
va dan » ca dan, va dao, va dau

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 ty lang xa hoi. hieu ve cac xuc ((va dan) OR (ban hanh)) ((vai cuu) OR (vai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty lang xa hoi. hieu ve cac xuc ((va dan) or (ban hanh)) ((vai cuu) OR (vai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty lang xa hoi. hieu ve cac xuc ((va dan) or (ban hanh)) ((vai cuu) OR (vai cua)) tre*.