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)
"publicooas administration" » "publicaooas administration" (Expand Search), "publicoooas administration" (Expand Search), "publicasooas administration" (Expand Search), "publicooas administracao" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search)
"publicaosas administration" » "publicaaosas administration" (Expand Search), "publicoaosas administration" (Expand Search), "publicasaosas administration" (Expand Search), "publicaosas administracao" (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 (((\"publicooas administration\") OR (\"publicaosas administration\"))))~".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicooas administration ) OR ( publicaosas administration ))))~.
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicooas administration") OR ("publicaosas administration"))))*.