Perhaps you should try some spelling variations:
"literatura e de isaac." » "literatura en de isaac.", "literatura del de isaac.", "literatura de de isaac.", "literatura y de isaac.", "literatura _ de isaac."
"literatura e el islam." » "literatura en el islam.", "literatura del el islam.", "literatura es el islam.", "literatura el el islam."
"literatura de el islam." » "literatura den el islam.", "literatura des el islam.", "literatura del el islam."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura e de isaac.") or ((("literatura e el islam.") OR ("literatura de el islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura e de isaac.") OR ((("literatura e el islam.") OR ("literatura de el islam.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura e de isaac.\") or (((\"literatura e el islam.\") OR (\"literatura de el islam.\"))))".
• Removing quotes may allow a broader search: (( literatura e de isaac. ) or ((( literatura e el islam. ) OR ( literatura de el islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura e de isaac.") or ((("literatura e el islam.") OR ("literatura de el islam."))))*.