Perhaps you should try some spelling variations:
"literature arabe e islam." » "literatura arabe e islam.", "literature arab e islam.", "literature france e islam.", "literature arabes e islam.", "literature arabe de islam.", "literature arabe en islam.", "literature arabe el islam.", "literature arabe e islas.", "literature arabe del islam."
"literatura al de islam." » "literatura el de islam.", "literatura del de islam.", "literatura de de islam.", "literatura al del islam.", "literatura al de isla.", "literatura al de ilam.", "literatura al de islas.", "literatura al ddel islam.", "literatura al dr islam."
"literatura al de islas." » "literatura el de islas.", "literatura del de islas.", "literatura de de islas.", "literatura al e islas.", "literatura al de isla.", "literatura al de isaias.", "literatura al dr islas."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("literature arabe e islam.") or ((("literatura al de islam.") OR ("literatura al de islas."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literature arabe e islam.") OR ((("literatura al de islam.") OR ("literatura al de islas.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literature arabe e islam.\") or (((\"literatura al de islam.\") OR (\"literatura al de islas.\"))))".
• Removing quotes may allow a broader search: (( literature arabe e islam. ) or ((( literatura al de islam. ) OR ( literatura al de islas. )))).
• Adding a wildcard symbol may retrieve word variants: (("literature arabe e islam.") or ((("literatura al de islam.") OR ("literatura al de islas."))))*.