Perhaps you should try some spelling variations:
"literatura el_ de las." » "literatura el de las.", "literatura ele de las.", "literatura del de las."
"literatura en del islam." » "literatura espana del islam.", "literatura en el islam."
"literatura de de islam." » "literatura de de isla.", "literatura de e islam.", "literatura de de ilam.", "literatura de fe islam.", "literatura de di islam."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura el_ de las.") or ((("literatura en del islam.") or ("literatura de de islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura el_ de las.") OR ((("literatura en del islam.") OR ("literatura de de islam."))))*.
• Removing quotes may allow a broader search: (( literatura el_ de las. ) or ((( literatura en del islam. ) or ( literatura de de islam. ))))*.