Perhaps you should try some spelling variations:
"literatura arabes de isaac." » "literatura arabe de isaac.", "literatura arte de isaac.", "literature arab de isaac.", "literatura arabes e isaac.", "literatura arabes y isaac."
"literatura del de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del dean isla."
"literatura es e isolda." » "literatura en e isolda.", "literatura e e isolda.", "literatura el e isolda.", "literatura es de isolda.", "literatura es e isela.", "literatura es e isla.", "literatura es el isolda.", "literatura es en isolda."

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