Perhaps you should try some spelling variations:
"political sciences. publica policy." » "political science. publica policy.", "policy sciences. publica policy.", "physical sciences. publica policy.", "political sciences. public policy.", "political sciences. publica politica.", "political sciences. publica monica."
"politica reciente. publica policy." » "political science. publica policy.", "politica regional. publica policy.", "politica respecto. publica policy.", "politica reciente. public policy.", "politica reciente. publica politica.", "politica reciente. publica monica."

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: (("political sciences. publica policy.") or ("politica reciente. publica policy."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("political sciences. publica policy.") OR ("politica reciente. publica policy.")).
• Removing quotes may allow a broader search: (( political sciences. publica policy. ) or ( politica reciente. publica policy. )).
• Adding a wildcard symbol may retrieve word variants: (("political sciences. publica policy.") or ("politica reciente. publica policy."))*.