Perhaps you should try some spelling variations:
"literatura en de isla." » "literatura de de isla.", "literatura espana de isla.", "literatura den de isla.", "literatura deln de isla.", "literatura en de isaac."
"literatura e e islam." » "literatura de e islam.", "literatura del e islam.", "literatura e el islam.", "literatura e e islas.", "literatura e del islam.", "literatura el e islam.", "literatura en e islam."
"literatura e de isla." » "literatura de de isla.", "literatura del de isla.", "literatura e de isaac.", "literatura y de isla.", "literatura _ de isla."

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 e islam.") or ((("literatura e de isla.") OR ("literatura en de isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura e e islam.") OR ((("literatura e de isla.") OR ("literatura en de isla.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura e e islam.\") or (((\"literatura e de isla.\") OR (\"literatura en de isla.\"))))".
• Removing quotes may allow a broader search: (( literatura e e islam. ) or ((( literatura e de isla. ) OR ( literatura en de isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura e e islam.") or ((("literatura e de isla.") OR ("literatura en de isla."))))*.