Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hang tai » hang va, dung tai
va hang » van hang, va nang, va lang
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
cua te » cua tu
suc va » duc va, tuc va, luc va
va cao » va cac, va dao, va bao
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 ky lang xa hoi. lieu ((va cao) OR (va co)) suc va hang tai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky lang xa hoi. lieu ((va cao) OR (va co)) suc va hang tai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky lang xa hoi. lieu ((va cao) OR (va co)) suc va hang tai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: toc sach ky lang xa hoi. lieu ((va cao) OR (va co)) suc va hang tai ((cua tre) or (cua te))*.