Perhaps you should try some spelling variations:
literatura breve » literatura de, literatura en, literatura del
literatura mas » literatura temas, literatura al, literatura a
del islam » el islam
un islam » el islam, e islam, al islam
en islam » el islam, e islam, en ilam
mas en » mas el, masas 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 (del islam)).\") or (\"literatura mas en islam.\"))".
• Removing quotes may allow a broader search: (( literatura breve ((un islam) or (del islam)). ) or ( literatura mas en islam. )).