Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicoa administracao" » "publicaoa administracao" (Expand Search), "publicooa administracao" (Expand Search), "publicasoa administracao" (Expand Search), "publica administracao" (Expand Search), "publico administracao" (Expand Search), "publicos administracao" (Expand Search)
"publicao administration" » "publicaao administration" (Expand Search), "publicoao administration" (Expand Search), "publicasao administration" (Expand Search), "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas 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 ((("publicoa administracao") OR ("publicao administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoa administracao\") OR (\"publicao administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoa administracao ) OR ( publicao administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoa administracao") OR ("publicao administration"))))*.