Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicoos administracao" » "publicaoos administracao" (Expand Search), "publicooos administracao" (Expand Search), "publicasoos administracao" (Expand Search), "publicos administracao" (Expand Search), "publico administracao" (Expand Search), "publicas administracao" (Expand Search)
"publicoasa administration" » "publicaoasa administration" (Expand Search), "publicooasa administration" (Expand Search), "publicasoasa administration" (Expand Search), "publicas 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 administracao"))) OR ("publicoasa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoos administracao\"))) OR (\"publicoasa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoos administracao ))) OR ( publicoasa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoos administracao"))) OR ("publicoasa administration"))*.