Perhaps you should try some spelling variations:
"literatura arabes y isla." » "literatura arabe y isla.", "literature arab y isla.", "literatura area y isla.", "literatura arabes e isla."
"literatura arte y isla." » "literatura arabe y isla.", "literatura breve y isla.", "literatura entre y isla.", "literatura arte e isla."
"literatura del de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del dean isaac."

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