Perhaps you should try some spelling variations:
"literatura e del islam." » "literatura en 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 isaacm." » "literatura de de isaac.", "literatura de de islam.", "literatura de e isaac.", "literatura de fe isaacm.", "literatura de di isaacm."
"literatura y de isla." » "literatura y de isaac."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura e del islam.") or ("literatura de de isaacm."))) or ("literatura y de isla."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura e del islam.") OR ("literatura de de isaacm."))) OR ("literatura y de isla.")).
• Removing quotes may allow a broader search: (((( literatura e del islam. ) or ( literatura de de isaacm. ))) or ( literatura y de isla. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura e del islam.") or ("literatura de de isaacm."))) or ("literatura y de isla."))*.