Perhaps you should try some spelling variations:
"literature arab _ plan." » "literatura arabe _ plan.", "literature early _ plan.", "literatura para _ plan."
"literatura el del islam." » "literatura del del islam.", "literatura en del islam.", "literatura de del islam.", "literatura enl del islam.", "literatura dell del islam.", "literatura el dele islam.", "literatura el delta islam.", "literatura piel del islam."
"literatura e el islam." » "literatura de el islam.", "literatura en el islam.", "literatura del el islam.", "literatura es el 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 el del islam.") or ("literatura e el islam."))) or ("literature arab _ plan."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura el del islam.") OR ("literatura e el islam."))) OR ("literature arab _ plan.")).
• Removing quotes may allow a broader search: (((( literatura el del islam. ) or ( literatura e el islam. ))) or ( literature arab _ plan. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura el del islam.") or ("literatura e el islam."))) or ("literature arab _ plan."))*.