Perhaps you should try some spelling variations:
"literature francesc de isla." » "literatura francesa de isla.", "literature france de isla.", "literatura francesas de isla.", "literature frances de isla.", "literature francesa de isla.", "literature francesc a isla.", "literature francesc de isaac."
"literatura de en isaac." » "literatura de e isaac.", "literatura de de isaac.", "literatura de _ isaac.", "literatura de un isaac.", "literatura de el isaac.", "literatura fe en isaac."
"literatura _ de ilam." » "literatura _ de islam.", "literatura _ de chilam."

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 de en isaac.") or ("literatura _ de ilam."))) or ("literature francesc de isla."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura de en isaac.") OR ("literatura _ de ilam."))) OR ("literature francesc de isla.")).
• Removing quotes may allow a broader search: (((( literatura de en isaac. ) or ( literatura _ de ilam. ))) or ( literature francesc de isla. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura de en isaac.") or ("literatura _ de ilam."))) or ("literature francesc de isla."))*.