Perhaps you should try some spelling variations:
"literatura el _ islam." » "literatura del _ islam.", "literatura e _ islam.", "literatura de _ islam."
"literatura el de isaac." » "literatura del de isaac.", "literatura e de isaac.", "literatura de de isaac."
"literatura en dem islam." » "literatura de dem islam.", "literatura espana dem islam.", "literatura en del islam.", "literatura en de islam.", "literatura en el islam.", "literatura en duhem 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 el _ islam.") or ("literatura el de isaac."))) or ("literatura en dem islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura el _ islam.") OR ("literatura el de isaac."))) OR ("literatura en dem islam."))*.
• Removing quotes may allow a broader search: (((( literatura el _ islam. ) or ( literatura el de isaac. ))) or ( literatura en dem islam. ))*.