Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
nang hoc » nang doc, nang luc, dong hoc
sach ty » sach y, sach tu, xach tay
hoc hai » hoc dai, hoc bai, hoc tai
xuc ban » duc ban, cuc ban, quoc ban
ban anh » ban hanh, ban banh, ban danh
cua tre » cuu tre, cua triet, dua tren
va cam » va cham, va cac, va cao
cua te » cua tu

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 cam xuc ban anh d ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang hoc hai. lieu va cam xuc ban anh d ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach thu)) nang hoc hai. lieu va cam xuc ban anh d ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thu)) nang hoc hai. lieu va cam xuc ban anh d ((cua tre) OR (cua te))*.