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