Perhaps you should try some spelling variations:
"literatura e el islam." » "literatura en el islam.", "literatura del el islam.", "literatura de el islam.", "literatura es el islam."
"literatura de fdel islam." » "literatura de del islam.", "literatura de de islam.", "literatura de fidel islam.", "literatura de fedel islam."
"literatura y de isla." » "literatura y de isaac."

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