Perhaps you should try some spelling variations:
"literature early e islam." » "literature study e islam.", "literature latin e islam.", "literatura al e islam.", "literature earl e islam.", "literature early evo islam.", "literature early new islam.", "literature early el islam.", "literature early e islas.", "literature early del islam."
"literatura e una idea." » "literatura en una idea.", "literatura del una idea.", "literatura e la idea.", "literatura de una idea.", "literatura le una idea.", "literatura ue una idea."
"literatura de de isla." » "literatura de de isaac.", "literatura de fe isla.", "literatura de di isla."

Try widening your search to All Fields.

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