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)
"publicoasaa administration" » "publicaoasaa administration" (Expand Search), "publicooasaa administration" (Expand Search), "publicasoasaa administration" (Expand Search), "publicoasaa 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)

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 (((\"publicoasaa administration\") OR (\"publicooas administration\"))))~".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoasaa administration ) OR ( publicooas administration ))))~.
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoasaa administration") OR ("publicooas administration"))))*.