Perhaps you should try some spelling variations:
"literatura del de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del de isaac.", "literatura del dean isla."
"literatura den del islam." » "literatura de del islam.", "literatura en del islam.", "literatura el del islam.", "literatura den el islam.", "literatura gen del islam."
"literatura e ley islam." » "literatura de ley islam.", "literatura en ley islam.", "literatura e el islam.", "literatura e e islam.", "literatura e de islam.", "literatura y ley 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 ley islam.") or ("literatura del de isla."))) or ("literatura den del islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura e ley islam.") OR ("literatura del de isla."))) OR ("literatura den del islam.")).
• Removing quotes may allow a broader search: (((( literatura e ley islam. ) or ( literatura del de isla. ))) or ( literatura den del islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura e ley islam.") or ("literatura del de isla."))) or ("literatura den del islam."))*.