Perhaps you should try some spelling variations:
"literature arab _ islam." » "literatura arabe _ islam.", "literature early _ islam.", "literatura para _ islam."
"literatura al eco islam." » "literatura el eco islam.", "literatura del eco islam.", "literatura de eco islam.", "literatura al e islam."
"literatura al el islam." » "literatura el el islam.", "literatura del el islam.", "literatura de el islam.", "literatura al e 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: (("literature arab _ islam.") or ((("literatura al eco islam.") OR ("literatura al el islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literature arab _ islam.") OR ((("literatura al eco islam.") OR ("literatura al el islam.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literature arab _ islam.\") or (((\"literatura al eco islam.\") OR (\"literatura al el islam.\"))))".
• Removing quotes may allow a broader search: (( literature arab _ islam. ) or ((( literatura al eco islam. ) OR ( literatura al el islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literature arab _ islam.") or ((("literatura al eco islam.") OR ("literatura al el islam."))))*.