Perhaps you should try some spelling variations:
"literature arabes e islam." » "literatura arabe e islam.", "literature arab e islam.", "literature francesc e islam.", "literature arabes el islam.", "literature arabes e islas.", "literature arabes del islam."
"literatura en en islam." » "literatura espana en islam.", "literatura en el islam.", "literatura en un islam.", "literatura en en ilam."
"literatura de en islam." » "literatura de el islam.", "literatura de un islam.", "literatura de en ilam.", "literatura fe en islam."

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