Perhaps you should try some spelling variations:
"literatura o de islam." » "literatura e de islam.", "literatura a de islam.", "literatura _ de islam.", "literatura o de isla.", "literatura o e islam.", "literatura o de ilam.", "literatura y de islam."
"literatura o del islam." » "literatura e del islam.", "literatura a del islam.", "literatura _ del islam.", "literatura o el islam.", "literatura y del islam."
"literatura de de isaac." » "literatura de fe isaac.", "literatura de di 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 o de islam.") OR ("literatura o del islam."))) or ("literatura de de isaac."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura o de islam.") OR ("literatura o del islam."))) OR ("literatura de de isaac.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura o de islam.\") OR (\"literatura o del islam.\"))) or (\"literatura de de isaac.\"))".
• Removing quotes may allow a broader search: (((( literatura o de islam. ) OR ( literatura o del islam. ))) or ( literatura de de isaac. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura o de islam.") OR ("literatura o del islam."))) or ("literatura de de isaac."))*.