Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
lam xuc » cam xuc, lam duoc
ben dai » benh dai, hien dai, vien dai
ben doi » bien doi, ben di, ben moi
xuc ban » duc ban, cuc ban, quoc ban
van lam » van nam
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet

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 ky ((nang xa) or (lang xa)) hoi. hieu van lam xuc ban ((ben doi) OR (ben dai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((nang xa) OR (lang xa)) hoi. hieu van lam xuc ban ((ben doi) OR (ben dai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((nang xa) or (lang xa)) hoi. hieu van lam xuc ban ((ben doi) OR (ben dai)) cua tre*".