Perhaps you should try some spelling variations:
"sobre politicas republicanas." » "sobre politica republicana.", "sobre politicas publicas.", "sobre politico republicano."
"sobre politica publicas." » "sobre politicas publicas.", "sobre politica publica.", "sobre politica publicaciones."
"serie politicas paz." » "serie policiaca paz.", "serie politicas para.", "serie politicas de.", "serie politicas en."

Try widening your search to All Fields.

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 republicanas.") or ("sobre politica publicas."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie politicas paz.") OR ((("sobre politicas republicanas.") OR ("sobre politica publicas.")))).
• Removing quotes may allow a broader search: (( serie politicas paz. ) or ((( sobre politicas republicanas. ) or ( sobre politica publicas. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie politicas paz.") or ((("sobre politicas republicanas.") or ("sobre politica publicas."))))*.