Perhaps you should try some spelling variations:
"literature arab e islas." » "literatura arabe e islas.", "literature early e islas.", "literatura para e islas.", "literature arab el islam.", "literature arabe e islas.", "literature arab _ islas.", "literature arabes e islas."
"literatura del de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del dean isaac."
"literatura _ de islam." » "literatura _ del islam.", "literatura _ de isla.", "literatura _ e 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 del de isaac.") or ("literatura _ de islam."))) or ("literature arab e islas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura del de isaac.") OR ("literatura _ de islam."))) OR ("literature arab e islas.")).
• Removing quotes may allow a broader search: (((( literatura del de isaac. ) or ( literatura _ de islam. ))) or ( literature arab e islas. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura del de isaac.") or ("literatura _ de islam."))) or ("literature arab e islas."))*.