Perhaps you should try some spelling variations:
"literatura espana de isla." » "literatura espanola de isla.", "literatura mexicana de isla.", "literatura espana de isaac."
"literatura o del islam." » "literatura e del islam.", "literatura a del islam.", "literatura _ del islam.", "literatura o el islam.", "literatura y del islam.", "literatura o de islam."
"literatura de de islam." » "literatura de e islam.", "literatura de de ilam.", "literatura de de islas.", "literatura de de isaacm.", "literatura de fe islam.", "literatura de di islam."

Try widening your search to All Fields.

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

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