Perhaps you should try some spelling variations:
"literatura e de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del de isla.", "literatura e de isaac.", "literatura y de isla.", "literatura o de isla."
"literatura _ de isaacm." » "literatura _ de isaac.", "literatura _ de islam.", "literatura _ e isaac."
"literatura _ e islam." » "literatura _ el islam.", "literatura _ e islas.", "literatura _ del 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 e de isla.") OR ((("literatura _ de isaacm.") OR ("literatura _ e islam."))))~.
• Removing quotes may allow a broader search: (( literatura e de isla. ) or ((( literatura _ de isaacm. ) or ( literatura _ e islam. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("literatura e de isla.") or ((("literatura _ de isaacm.") or ("literatura _ e islam."))))*.