Perhaps you should try some spelling variations:
"literatura arabo e isela." » "literatura arabe e isela.", "literature arab e isela.", "literatura alvaro e isela.", "literatura arabes e isela.", "literatura arabe de isela.", "literatura arabo e isla.", "literatura arabo e isolda."
"literatura e de isaac." » "literatura en de isaac.", "literatura del de isaac.", "literatura y de isaac.", "literatura _ de isaac.", "literatura o de isaac."
"literatura de de islam." » "literatura de del islam.", "literatura de de isla.", "literatura de e islam.", "literatura de fe islam.", "literatura de di islam.", "literatura dy de islam.", "literatura d_ de islam.", "literatura do de islam."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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