Perhaps you should try some spelling variations:
"literatura arabe de isaac." » "literatura de de isaac.", "literatura e de isaac.", "literatura al de isaac.", "literatura caribe de isaac.", "literatura sabe de isaac.", "literatura arabes e isaac."
"literatura breve de isla." » "literatura de de isla.", "literatura del de isla.", "literatura e de isla."
"literatura en de isla." » "literatura de de isla.", "literatura espana de isla."

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 arabe de isaac.") or ((("literatura breve de isla.") OR ("literatura en de isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura arabe de isaac.") OR ((("literatura breve de isla.") OR ("literatura en de isla.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura arabe de isaac.\") or (((\"literatura breve de isla.\") OR (\"literatura en de isla.\"))))".
• Removing quotes may allow a broader search: (( literatura arabe de isaac. ) or ((( literatura breve de isla. ) OR ( literatura en de isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura arabe de isaac.") or ((("literatura breve de isla.") OR ("literatura en de isla."))))*.