Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
nang hoc » nang doc, nang luc, dong hoc
cuc ban » cua ban, cac ban, cuu ban
xuc ban » duc ban, quoc ban, xuat ban
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, xach tay
hoc hai » hoc dai, hoc bai, hoc tai
va cao » va cac, va co, va dao
d cua » de cua, do cua, da 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 ty) or (sach thu)) nang hoc hai. lieu va cao ((xuc ban) OR (cuc ban)) anh d cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang hoc hai. lieu va cao ((xuc ban) OR (cuc ban)) anh d cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach thu)) nang hoc hai. lieu va cao ((xuc ban) OR (cuc ban)) anh d cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thu)) nang hoc hai. lieu va cao ((xuc ban) OR (cuc ban)) anh d cua tre*.