Perhaps you should try some spelling variations:
"literatura de a islam." » "literatura de al islam.", "literatura de e islam.", "literatura de _ islam.", "literatura de la islam."
"literatura de e islas." » "literatura de fe islas.", "literatura de _ islas.", "literatura de 3 islas."
"literatura de el islam." » "literatura de fel islam.", "literatura de _l islam.", "literatura de 3l islam."

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 de e islas.") OR ("literatura de a islam."))) OR ("literatura de el islam."))~.
• Removing quotes may allow a broader search: (((( literatura de e islas. ) or ( literatura de a islam. ))) or ( literatura de el islam. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura de e islas.") or ("literatura de a islam."))) or ("literatura de el islam."))*.