Perhaps you should try some spelling variations:
"literatura arabes _ isaac." » "literatura arabe _ isaac.", "literatura arte _ isaac.", "literature arab _ isaac."
"literatura en de islam." » "literatura de de islam.", "literatura espana de islam.", "literatura en del islam.", "literatura en de isla.", "literatura en e islam."
"literatura _ de ilam." » "literatura _ de chilam."

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

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