Perhaps you should try some spelling variations:
ban hanh » ban hang
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
cao hoc » chat hoc
cho hoc » khoa hoc
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc ban » duc ban, cuc ban, quoc ban
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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 ty xang ((((cao hoc) OR (co hoc))) or (cho hoc)). hieu ve cac xuc ban hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang ((((cao hoc) OR (co hoc))) OR (cho hoc)). hieu ve cac xuc ban hanh tai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang ((((cao hoc) OR (co hoc))) or (cho hoc)). hieu ve cac xuc ban hanh tai cua tre*".