Perhaps you should try some spelling variations:
"literatura o el islam." » "literatura a el islam.", "literatura _ el islam.", "literatura con el islam.", "literatura y el islam."
"literatura e del islam." » "literatura en del islam.", "literatura del del islam.", "literatura de del islam.", "literatura 5e del islam.", "literatura y del islam."
"literatura de de isaac." » "literatura de fe isaac.", "literatura de di isaac."

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 o el islam.") or ((("literatura de de isaac.") or ("literatura e del islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura o el islam.") OR ((("literatura de de isaac.") OR ("literatura e del islam.")))).
• Removing quotes may allow a broader search: (( literatura o el islam. ) or ((( literatura de de isaac. ) or ( literatura e del islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura o el islam.") or ((("literatura de de isaac.") or ("literatura e del islam."))))*.