Perhaps you should try some spelling variations:
"sobre politicas publicad." » "sobre politicas publicas.", "sobre politica publica.", "sobre politicos republica.", "serie politicas publicad."
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publica.", "sobre politica publicaciones."
"serie policiaca paz." » "serie policiaca a.", "serie politicas paz.", "serie policiaca de."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("serie policiaca paz.") or ((("sobre politicas publicad.") or ("sobre politica publicas."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie policiaca paz.") OR ((("sobre politicas publicad.") OR ("sobre politica publicas."))))*.
• Removing quotes may allow a broader search: (( serie policiaca paz. ) or ((( sobre politicas publicad. ) or ( sobre politica publicas. ))))*.