Perhaps you should try some spelling variations:
"literatura en de isaac." » "literatura espana de isaac."
"literatura del del islam." » "literatura del el islam.", "literatura edel del islam.", "literatura del de islam.", "literatura del dem islam."
"literatura de fe islam." » "literatura de e islam.", "literatura de de islam.", "literatura de el 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 del islam."))~.
• Removing quotes may allow a broader search: (((( literatura de fe islam. ) or ( literatura en de isaac. ))) or ( literatura del del islam. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura de fe islam.") or ("literatura en de isaac."))) or ("literatura del del islam."))*.