Perhaps you should try some spelling variations:
"literature arabes e isaac." » "literatura arabe e isaac.", "literature arab e isaac.", "literature francesc e isaac.", "literature arabes de isaac.", "literature arabes en isaac.", "literature arabes _ isaac."
"literatura de de isaacm." » "literatura de de isaac.", "literatura de dde isaacm.", "literatura de den isaacm.", "literatura de d_ isaacm.", "literatura de fe isaacm.", "literatura de di isaacm."
"literatura y de islam." » "literatura y del islam.", "literatura y de isla.", "literatura y e islam."

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