Perhaps you should try some spelling variations:
"literatura espana en islam." » "literatura espanola en islam.", "literatura mexicana en islam.", "literatura despana en islam.", "literatura enspana en islam.", "literatura delspana en islam.", "literatura espana el islam.", "literatura espana e islam.", "literatura espana un islam."
"literatura e de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del de isaac.", "literatura y de isaac.", "literatura _ de isaac."
"literatura _ del islam." » "literatura _ el islam."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura _ del islam.") or ("literatura espana en islam."))) or ("literatura e de isaac."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura _ del islam.") OR ("literatura espana en islam."))) OR ("literatura e de isaac.")).
• Removing quotes may allow a broader search: (((( literatura _ del islam. ) or ( literatura espana en islam. ))) or ( literatura e de isaac. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura _ del islam.") or ("literatura espana en islam."))) or ("literatura e de isaac."))*.