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 _ de isla.", "literatura o de isla."
"literatura y de isaacm." » "literatura y de isaac.", "literatura y e isaac."
"literatura y de islam." » "literatura y del islam.", "literatura y e islam.", "literatura y de ilam.", "literatura y de isaacm."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura y de islam.") OR ("literatura y de isaacm."))) or ("literatura e de isla."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura y de islam.") OR ("literatura y de isaacm."))) OR ("literatura e de isla."))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura y de islam.\") OR (\"literatura y de isaacm.\"))) or (\"literatura e de isla.\"))*".
• Removing quotes may allow a broader search: (((( literatura y de islam. ) OR ( literatura y de isaacm. ))) or ( literatura e de isla. ))*.