Perhaps you should try some spelling variations:
"literature arabe el islam." » "literatura arabe el islam.", "literature arab el islam.", "literature france el islam.", "literature arabe en islam.", "literature arabe e islam.", "literature arabe et islam.", "literature arabe el islas."
"literatura sabe de isla." » "literatura isabel de isla.", "literatura arabe de isla.", "literatura sobre de isla.", "literatura sabe de isaac.", "literatura sabde de isla.", "literatura saby de isla.", "literatura sab_ de isla."
"literatura e de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del de isla.", "literatura e de isaac.", "literatura y de isla.", "literatura _ de isla."

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