Perhaps you should try some spelling variations:
"ser politicos republica." » "ser politico republicano.", "ser politicas republicanas.", "ser politica republicana.", "de politicos republica.", "serie politicas republica.", "usos politicos republica."
"serie politica publicas." » "serie politicas publicas.", "serie politica publica.", "serie politica publicaciones.", "serie policiaca publicas.", "sobre politica publicas."
"ser criticos republica." » "sus criticos republica.", "de criticos republica.", "der criticism republica."

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 politica publicas.") or ((("ser politicos republica.") OR ("ser criticos republica."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie politica publicas.") OR ((("ser politicos republica.") OR ("ser criticos republica.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"serie politica publicas.\") or (((\"ser politicos republica.\") OR (\"ser criticos republica.\"))))".
• Removing quotes may allow a broader search: (( serie politica publicas. ) or ((( ser politicos republica. ) OR ( ser criticos republica. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie politica publicas.") or ((("ser politicos republica.") OR ("ser criticos republica."))))*.