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)
"publicaaaasa administration" » "publicaaaaasa administration" (Expand Search), "publicoaaaasa administration" (Expand Search), "publicasaaaasa administration" (Expand Search), "publicaaaasa 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 ("publicaaaasa administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicasoa administration\") OR (\"publicaaaasa administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicasoa administration ) OR ( publicaaaasa administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicasoa administration") OR ("publicaaaasa administration"))))*.