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)
"publicoso administration" » "publicaoso administration" (Expand Search), "publicooso administration" (Expand Search), "publicasoso administration" (Expand Search), "publicoso administracao" (Expand Search), "publicos administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicosoa administration" » "publicaosoa administration" (Expand Search), "publicoosoa administration" (Expand Search), "publicasosoa administration" (Expand Search), "publicosoa administracao" (Expand Search), "publicosa administration" (Expand Search), "publicoa administration" (Expand Search), "publicasa administration" (Expand Search), "publicos administration" (Expand Search)

You may be able to get more results by adjusting your search query.

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