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)
"publicaooss administration" » "publicaaooss administration" (Expand Search), "publicoaooss administration" (Expand Search), "publicasaooss administration" (Expand Search), "publicaooss administracao" (Expand Search)
"publicasoa administration" » "publicaasoa administration" (Expand Search), "publicoasoa administration" (Expand Search), "publicasasoa administration" (Expand Search), "publicasoa administracao" (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 ("publicaooss administration"))) OR ("publicasoa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicaooss administration\"))) OR (\"publicasoa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicaooss administration ))) OR ( publicasoa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicaooss administration"))) OR ("publicasoa administration"))*.