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)
"publicoas administration" » "publicaoas administration" (Expand Search), "publicooas administration" (Expand Search), "publicasoas administration" (Expand Search), "publicas 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 ("publicoos administracao"))) OR ("publicoas administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoos administracao\"))) OR (\"publicoas administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoos administracao ))) OR ( publicoas administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoos administracao"))) OR ("publicoas administration"))*.