Perhaps you should try some spelling variations:
"literatura sabe de isaac." » "literatura isabel de isaac.", "literatura arabe de isaac.", "literatura sobre de isaac.", "literatura sabde de isaac.", "literatura saby de isaac.", "literatura sab_ de isaac."
"literatura en del islam." » "literatura de del islam.", "literatura espana del islam.", "literatura den del islam.", "literatura deln del islam.", "literatura en el islam."
"literatura e de isaac." » "literatura de de isaac.", "literatura del de isaac.", "literatura y de isaac.", "literatura _ de isaac."

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 sabe de isaac.") or ("literatura e de isaac."))) or ("literatura en del islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura sabe de isaac.") OR ("literatura e de isaac."))) OR ("literatura en del islam.")).
• Removing quotes may allow a broader search: (((( literatura sabe de isaac. ) or ( literatura e de isaac. ))) or ( literatura en del islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura sabe de isaac.") or ("literatura e de isaac."))) or ("literatura en del islam."))*.