Perhaps you should try some spelling variations:
"literatura de del islam." » "literatura de el islam."
"literatura de et islam." » "literatura de el islam.", "literatura de e islam.", "literatura de e islas.", "literatura de eta islam.", "literatura de en islam."
"literatura de fe islam." » "literatura de e islam.", "literatura de de islam.", "literatura de el 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 et islam.") OR ("literatura de del islam."))) OR ("literatura de fe islam."))~.
• Removing quotes may allow a broader search: (((( literatura de et islam. ) or ( literatura de del islam. ))) or ( literatura de fe islam. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura de et islam.") or ("literatura de del islam."))) or ("literatura de fe islam."))*.