Perhaps you should try some spelling variations:
"literatura del _ islam." » "literatura de _ islam.", "literatura en _ islam."
"literatura e e islam." » "literatura de e islam.", "literatura en e islam.", "literatura e el islam.", "literatura e del islam.", "literatura e de islam.", "literatura el e islam."
"literatura e e islas." » "literatura de e islas.", "literatura en e islas.", "literatura e el islam.", "literatura e de islas.", "literatura el e islas."

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 del _ islam.") OR ((("literatura e e islam.") OR ("literatura e e islas."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura del _ islam.\") or (((\"literatura e e islam.\") OR (\"literatura e e islas.\"))))~".
• Removing quotes may allow a broader search: (( literatura del _ islam. ) or ((( literatura e e islam. ) OR ( literatura e e islas. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("literatura del _ islam.") or ((("literatura e e islam.") OR ("literatura e e islas."))))*.