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