Perhaps you should try some spelling variations:
"literatur_ de de isaac." » "literature de de isaac.", "literatura del de isaac.", "literaturas de de isaac.", "literatur_ de fe isaac.", "literatur_ de di isaac."
"literatura de de isaacm." » "literatura de de islam.", "literatura de e isaac.", "literatura de fe isaacm.", "literatura de di isaacm."
"literatura y de isaacm." » "literatura y de islam.", "literatura y e isaac."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura de de isaacm.") OR ("literatur_ de de isaac."))) OR ("literatura y de isaacm."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura de de isaacm.\") OR (\"literatur_ de de isaac.\"))) OR (\"literatura y de isaacm.\"))*".
• Removing quotes may allow a broader search: (((( literatura de de isaacm. ) OR ( literatur_ de de isaac. ))) OR ( literatura y de isaacm. ))*.