Perhaps you should try some spelling variations:
"literatura en del islam." » "literatura espana del islam.", "literatura en el islam."
"literatura el _ islam." » "literatura del _ islam.", "literatura e _ islam.", "literatura eslava _ islam."
"literatura de fidel islam." » "literatura de fiel islam.", "literatura de fines islam."

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

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