Perhaps you should try some spelling variations:
"literatura del dean isaac." » "literatura en dean isaac.", "literatura del de isaac.", "literatura del dan isac.", "literatura del en isaac.", "literatura del dano isaac.", "literatura del dia isaac."
"literatura des el islam." » "literatura es el islam.", "literatura desde el islam.", "literatura en el islam.", "literatura des del islam.", "literatura des en islam.", "literatura andes el islam."
"literatura de x islam." » "literatura de e islam.", "literatura de _ islam.", "literatura de al islam.", "literatura del x islam.", "literatura de ex islam.", "literatura de ix 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 del dean isaac.") or ((("literatura des el islam.") or ("literatura de x islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura del dean isaac.") OR ((("literatura des el islam.") OR ("literatura de x islam.")))).
• Removing quotes may allow a broader search: (( literatura del dean isaac. ) or ((( literatura des el islam. ) or ( literatura de x islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura del dean isaac.") or ((("literatura des el islam.") or ("literatura de x islam."))))*.