Perhaps you should try some spelling variations:
"literature arab en islam." » "literatura arabe en islam.", "literature early en islam.", "literatura para en islam.", "literature arab el islam.", "literature arab e islam.", "literature arab en ilam.", "literature arabe en islam.", "literature aaab en islam.", "literature arar en islam."
"literatura en de islam." » "literatura de de islam.", "literatura espana de islam.", "literatura en del islam.", "literatura en de isla.", "literatura en e islam."
"literatura a un islam." » "literatura al un islam.", "literatura e un islam.", "literatura de un islam.", "literatura a el islam.", "literatura a e islam.", "literatura a al islam."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura en de islam.") or ((("literature arab en islam.") or ("literatura a un islam."))))~.
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• Removing quotes may allow a broader search: (( literatura en de islam. ) or ((( literature arab en islam. ) or ( literatura a un islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura en de islam.") or ((("literature arab en islam.") or ("literatura a un islam."))))*.