Perhaps you should try some spelling variations:
"literatura en _ islam." » "literatura espana _ islam.", "literatura deln _ islam."
"literatura e del islam." » "literatura del del islam.", "literatura e el islam.", "literatura de del islam.", "literatura 5e del islam.", "literatura y del islam."
"literatura de de isaac." » "literatura de fe isaac.", "literatura de di isaac."

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