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