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 e islam." » "literatura de e islam.", "literatura en e islam.", "literatura e e islam.", "literatura den el islam.", "literatura den e islas.", "literatura din e islam."
"literatura y del islam." » "literatura y 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 y del islam.") OR ("literatura den e islam."))) OR ("literatura del de isla."))~.
• Removing quotes may allow a broader search: (((( literatura y del islam. ) or ( literatura den e islam. ))) or ( literatura del de isla. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura y del islam.") or ("literatura den e islam."))) or ("literatura del de isla."))*.