Perhaps you should try some spelling variations:
"literatura espana e islas." » "literatura espanola e islas.", "literatura mexicana e islas.", "literatura espana en islas.", "literatura espana el islas.", "literatura espana el islam."
"literatura el _ islam." » "literatura del _ islam.", "literatura e _ islam.", "literatura de _ islam."
"literatura en _ islam." » "literatura de _ 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 el _ islam.") OR ("literatura en _ islam."))) OR ("literatura espana e islas."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura el _ islam.\") OR (\"literatura en _ islam.\"))) or (\"literatura espana e islas.\"))~".
• Removing quotes may allow a broader search: (((( literatura el _ islam. ) OR ( literatura en _ islam. ))) or ( literatura espana e islas. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura el _ islam.") OR ("literatura en _ islam."))) or ("literatura espana e islas."))*.