Perhaps you should try some spelling variations:
"literatura de e isaac." » "literatura de de isaac.", "literatura de en isaac.", "literatura de _ isaac.", "literatura de el isaac.", "literatura de fe isaac."
"literatura de e islam." » "literatura de el islam.", "literatura de e islas.", "literatura de del islam.", "literatura de fe islam.", "literatura de _ islam."
"literatura _ de isla." » "literatura _ de 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 e isaac.") or ("literatura de e islam."))) or ("literatura _ de isla."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura de e isaac.") OR ("literatura de e islam."))) OR ("literatura _ de isla."))*.
• Removing quotes may allow a broader search: (((( literatura de e isaac. ) or ( literatura de e islam. ))) or ( literatura _ de isla. ))*.