Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search), "public administracao" (Expand Search)
"publicasoa administration" » "publicaasoa administration" (Expand Search), "publicoasoa administration" (Expand Search), "publicasasoa administration" (Expand Search), "publicasoa administracao" (Expand Search), "publicas administration" (Expand Search)
"publicoo administration" » "publicaoo administration" (Expand Search), "publicooo administration" (Expand Search), "publicasoo administration" (Expand Search), "publicoo administracao" (Expand Search), "publico administration" (Expand Search), "publicos administration" (Expand Search), "publica 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 ("publicasoa administration"))) OR ("publicoo administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicasoa administration\"))) OR (\"publicoo administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicasoa administration ))) OR ( publicoo administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicasoa administration"))) OR ("publicoo administration"))*.