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)
"publicoosas administration" » "publicaoosas administration" (Expand Search), "publicooosas administration" (Expand Search), "publicasoosas administration" (Expand Search), "publicoosas administracao" (Expand Search)
"publicooso administration" » "publicaooso administration" (Expand Search), "publicoooso administration" (Expand Search), "publicasooso administration" (Expand Search), "publicooso administracao" (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 ("publicoosas administration"))) OR ("publicooso administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoosas administration\"))) OR (\"publicooso administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoosas administration ))) OR ( publicooso administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoosas administration"))) OR ("publicooso administration"))*.