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