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)
"publicasosa administration" » "publicaasosa administration" (Expand Search), "publicoasosa administration" (Expand Search), "publicasasosa administration" (Expand Search), "publicasosa 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)

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 ("publicasosa administration"))) OR ("publicoos administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicasosa administration\"))) OR (\"publicoos administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicasosa administration ))) OR ( publicoos administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicasosa administration"))) OR ("publicoos administration"))*.