Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban hanh » ban hang
tay lang » tai lang, tay tang, tay quang
lam xuc » cam xuc, lam duoc
cua tre » cua te, cua triet, dua tren
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
su sach » so sach, vu sach
va lam » van lam, va lap

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

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