Perhaps you should try some spelling variations:
"literatura en _ islam." » "literatura de _ islam.", "literatura espana _ islam.", "literatura den _ islam.", "literatura deln _ islam."
"literatura e deseo visual." » "literatura de deseo visual.", "literatura del deseo visual.", "literatura e texto visual.", "literatura el deseo visual.", "literatura te deseo visual."
"literatura _ del islam." » "literatura _ el islam."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura _ del islam.") OR ("literatura en _ islam."))) OR ("literatura e deseo visual."))~.
• Removing quotes may allow a broader search: (((( literatura _ del islam. ) or ( literatura en _ islam. ))) or ( literatura e deseo visual. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura _ del islam.") or ("literatura en _ islam."))) or ("literatura e deseo visual."))*.