Perhaps you should try some spelling variations:
"literatura e el islam." » "literatura en el islam.", "literatura del el islam.", "literatura de el islam.", "literatura es el islam.", "literatura e el islas.", "literatura e el isla."
"literatura de di isaac." » "literatura de _ isaac.", "literatura de c isaac.", "literatura de e isaac.", "literatura de mi isaac.", "literatura de si isaac."
"literatura de de isaac." » "literatura de fe isaac."

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

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