Perhaps you should try some spelling variations:
literatura breve » literatura de, literatura en, literatura del
literatura a » literatura al, literatura e, literatura de
un islam » el islam, e islam, _ islam
al islam » el islam, del islam, e islam
en islam » el islam, e islam, en ilam
a en » y en, a un, l en

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

• If you are trying to use Boolean operators, they must be ALL CAPS: "((\"literatura breve ((un islam) OR (al islam)).\") or (\"literatura a en islam.\"))".
• Removing quotes may allow a broader search: (( literatura breve ((un islam) or (al islam)). ) or ( literatura a en islam. )).