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)
"publicoosas administration" » "publicaoosas administration" (Expand Search), "publicooosas administration" (Expand Search), "publicasoosas administration" (Expand Search), "publicoosas administracao" (Expand Search)
"publicaooos administration" » "publicaaooos administration" (Expand Search), "publicoaooos administration" (Expand Search), "publicasaooos administration" (Expand Search), "publicaooos 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 ("publicoosas administration"))) OR ("publicaooos administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoosas administration\"))) OR (\"publicaooos administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoosas administration ))) OR ( publicaooos administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoosas administration"))) OR ("publicaooos administration"))*.