Perhaps you should try some spelling variations:
"literatura en de isla." » "literatura de de isla.", "literatura espana de isla.", "literatura en de isaac."
"literatura o d_ isaacm." » "literatura e d_ isaacm.", "literatura a d_ isaacm.", "literatura _ d_ isaacm.", "literatura o de isaac.", "literatura o _ isaac.", "literatura o de isaacm.", "literatura o _ isaacm.", "literatura o d isaacm."
"literatura y e isaac." » "literatura y de isaac.", "literatura y en isaac.", "literatura y _ isaac.", "literatura y el isaac."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura y e isaac.\") OR (((\"literatura o d_ isaacm.\") OR (\"literatura en de isla.\"))))~".
• Removing quotes may allow a broader search: (( literatura y e isaac. ) OR ((( literatura o d_ isaacm. ) OR ( literatura en de isla. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("literatura y e isaac.") OR ((("literatura o d_ isaacm.") OR ("literatura en de isla."))))*.