Perhaps you should try some spelling variations:
"especies exoticas public." » "especies etica public.", "especial exoticas public."
"serie politicas publicas." » "serie policiaca publicas.", "serie politicas publico."
"elite politica publica." » "elites politicas publica.", "etica politica publica.", "entre politica publica."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("especies exoticas public.") or ((("elite politica publica.") or ("serie politicas publicas."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("especies exoticas public.") OR ((("elite politica publica.") OR ("serie politicas publicas.")))).
• Removing quotes may allow a broader search: (( especies exoticas public. ) or ((( elite politica publica. ) or ( serie politicas publicas. )))).
• Adding a wildcard symbol may retrieve word variants: (("especies exoticas public.") or ((("elite politica publica.") or ("serie politicas publicas."))))*.