Perhaps you should try some spelling variations:
"literature early e islam." » "literature study e islam.", "literature latin e islam.", "literatura al e islam.", "literature earl e islam.", "literature early evo islam.", "literature early new islam.", "literature early el islam.", "literature early e islas.", "literature early del islam."
"literatura en de isla." » "literatura de de isla.", "literatura espana de isla.", "literatura en de isaac."
"literatura el en isla." » "literatura del en isla.", "literatura e en isla.", "literatura de en isla.", "literatura el e isla.", "literatura el una isla.", "literatura el un islam.", "literatura el el isla."

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