Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicossa administracao" » "publicaossa administracao" (Expand Search), "publicoossa administracao" (Expand Search), "publicasossa administracao" (Expand Search), "publicos administracao" (Expand Search)
"publicoa administration" » "publicaoa administration" (Expand Search), "publicooa administration" (Expand Search), "publicasoa administration" (Expand Search), "publica administration" (Expand Search), "publico administration" (Expand Search), "publicos administration" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("public administration") OR ((("publicossa administracao") OR ("publicoa administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicossa administracao\") OR (\"publicoa administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicossa administracao ) OR ( publicoa administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicossa administracao") OR ("publicoa administration"))))*.