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)
"publicoaos administration" » "publicaoaos administration" (Expand Search), "publicooaos administration" (Expand Search), "publicasoaos administration" (Expand Search), "publicoaos administracao" (Expand Search), "publicas administration" (Expand Search), "publicos 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 ("publicoosas administration"))) OR ("publicoaos administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoosas administration\"))) OR (\"publicoaos administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoosas administration ))) OR ( publicoaos administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoosas administration"))) OR ("publicoaos administration"))*.