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)
"publicosoos administration" » "publicaosoos administration" (Expand Search), "publicoosoos administration" (Expand Search), "publicasosoos administration" (Expand Search), "publicosoos administracao" (Expand Search)
"publicasaas administration" » "publicaasaas administration" (Expand Search), "publicoasaas administration" (Expand Search), "publicasasaas administration" (Expand Search), "publicasaas 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 ("publicosoos administration"))) OR ("publicasaas administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicosoos administration\"))) OR (\"publicasaas administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicosoos administration ))) OR ( publicasaas administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicosoos administration"))) OR ("publicasaas administration"))*.