Perhaps you should try some spelling variations:
"literatura arabe e islam." » "literatura breve e islam.", "literatura de e islam.", "literatura e e islam.", "literatura arabes e islam.", "literatura arabe de islam.", "literatura arabe en islam.", "literatura arabe e islas.", "literatura arabe del islam."
"literatura en det islam." » "literatura de det islam.", "literatura espana det islam.", "literatura en del islam.", "literatura en de islam.", "literatura en de isla."
"literatura en el islam." » "literatura de el islam.", "literatura espana el islam."

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