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