Perhaps you should try some spelling variations:
"literatura en de isaac." » "literatura espana de isaac."
"literatura de fe islam." » "literatura de e islam.", "literatura de del islam.", "literatura de el islam."
"literatura del de islam." » "literatura del del islam.", "literatura del de isla.", "literatura del e islam.", "literatura del dean islam."

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

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