Perhaps you should try some spelling variations:
"literatura arte _ isla." » "literatura arabe _ isla.", "literatura breve _ isla.", "literatura entre _ isla."
"literatura sabe de islam." » "literatura isabel de islam.", "literatura arabe de islam.", "literatura sobre de islam.", "literatura sabe del islam.", "literatura sabe e islam.", "literatura sabe de ilam.", "literatura sabe de isaacm."
"literatura sabe de isla." » "literatura isabel de isla.", "literatura arabe de isla.", "literatura sobre de isla.", "literatura sabe de isaac."

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 arte _ isla.") or ((("literatura sabe de islam.") OR ("literatura sabe de isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura arte _ isla.") OR ((("literatura sabe de islam.") OR ("literatura sabe de isla.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura arte _ isla.\") or (((\"literatura sabe de islam.\") OR (\"literatura sabe de isla.\"))))".
• Removing quotes may allow a broader search: (( literatura arte _ isla. ) or ((( literatura sabe de islam. ) OR ( literatura sabe de isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura arte _ isla.") or ((("literatura sabe de islam.") OR ("literatura sabe de isla."))))*.