Perhaps you should try some spelling variations:
"literatura imanol del islam." » "literatura isabel del islam.", "literatura espanola del islam.", "literatura infantil del islam.", "literatura manos del islam.", "literatura mano del islam.", "literatura imanol el islam."
"literatura arabe e or arabe de islam." » "literatura arabe e or caribe de islam.", "literatura arabe e or sabe de islam.", "literatura arabe e or arabes e islam.", "literatura arabes e or arabe de islam.", "literatura arabe en or arabe de islam.", "literatura arabe y or arabe de islam."

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