Perhaps you should try some spelling variations:
ban hang » ngan hang
tang van » dang van, hoang van, trong van
chat xuc » chat huu, cam xuc, chao xu
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
hang vi » hang va, hanh vi, hang di
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu van
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: tu sach ty ((nang cao) or (tang van)) hoi. ((hieu ve) OR (hieu va)) chat xuc ban hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang cao) OR (tang van)) hoi. ((hieu ve) OR (hieu va)) chat xuc ban hang vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang cao) or (tang van)) hoi. ((hieu ve) OR (hieu va)) chat xuc ban hang vi cua tre*".