Perhaps you should try some spelling variations:
"literatura eln de isaac." » "literatura en de isaac.", "literatura el de isaac.", "literatura ele de isaac.", "literatura belen de isaac."
"literatura 2 el islam." » "literatura e el islam.", "literatura a el islam.", "literatura _ el islam.", "literatura y el islam.", "literatura o el islam."
"literatura de un islam." » "literatura de e islam.", "literatura de al islam.", "literatura de _ 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 2 el islam.") or ((("literatura eln de isaac.") or ("literatura de un islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura 2 el islam.") OR ((("literatura eln de isaac.") OR ("literatura de un islam.")))).
• Removing quotes may allow a broader search: (( literatura 2 el islam. ) or ((( literatura eln de isaac. ) or ( literatura de un islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura 2 el islam.") or ((("literatura eln de isaac.") or ("literatura de un islam."))))*.