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)
"publicoos administration" » "publicaoos administration" (Expand Search), "publicooos administration" (Expand Search), "publicasoos administration" (Expand Search), "publicoos administracao" (Expand Search), "publicos administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicooso administration" » "publicaooso administration" (Expand Search), "publicoooso administration" (Expand Search), "publicasooso administration" (Expand Search), "publicooso administracao" (Expand Search), "publicoso administration" (Expand Search), "publicoo administration" (Expand Search), "publicaso 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 ("publicoos administration"))) OR ("publicooso administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoos administration\"))) OR (\"publicooso administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoos administration ))) OR ( publicooso administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoos administration"))) OR ("publicooso administration"))*.