Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
vat hanh » vat thanh, van hanh, va hanh
lang van » dang van, tang van, hoang van
thua vat » thuat vat, thuc vat, thuat cat
co thua » o thua, cho thue
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach cu » sach cua, sach tu, sach uu
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay
va co » vo co

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach cu ((lang xa) OR (lang van)) hoi. hieu va co thua vat hanh lai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach cu ((lang xa) OR (lang van)) hoi. hieu va co thua vat hanh lai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach cu ((lang xa) OR (lang van)) hoi. hieu va co thua vat hanh lai ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: toc sach cu ((lang xa) OR (lang van)) hoi. hieu va co thua vat hanh lai ((cua tre) or (cuu tre))*.