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)
"publicasoos administration" » "publicaasoos administration" (Expand Search), "publicoasoos administration" (Expand Search), "publicasasoos administration" (Expand Search), "publicasoos administracao" (Expand Search)
"publicoaoao administration" » "publicaoaoao administration" (Expand Search), "publicooaoao administration" (Expand Search), "publicasoaoao administration" (Expand Search), "publicoaoao administracao" (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 ("publicasoos administration"))) OR ("publicoaoao administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicasoos administration\"))) OR (\"publicoaoao administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicasoos administration ))) OR ( publicoaoao administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicasoos administration"))) OR ("publicoaoao administration"))*.