Perhaps you should try some spelling variations:
"literatura espana del islam." » "literatura espanola del islam.", "literatura mexicana del islam.", "literatura espana de islam.", "literatura espana el islam."
"literatura de de isla." » "literatura de de isaac.", "literatura de fe isla.", "literatura de di isla."
"literatura _ de ilam." » "literatura _ de islam.", "literatura _ de chilam."

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 de de isla.") OR ("literatura espana del islam."))) OR ("literatura _ de ilam."))~.
• Removing quotes may allow a broader search: (((( literatura de de isla. ) or ( literatura espana del islam. ))) or ( literatura _ de ilam. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura de de isla.") or ("literatura espana del islam."))) or ("literatura _ de ilam."))*.