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

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