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

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

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