Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicos administration" (Expand Search), "public administracao" (Expand Search)
"publicoooa administration" » "publicaoooa administration" (Expand Search), "publicooooa administration" (Expand Search), "publicosoooa administration" (Expand Search), "publicoooa administracao" (Expand Search)
"publicas administration" » "publicaas administration" (Expand Search), "publicoas administration" (Expand Search), "publicosas administration" (Expand Search), "publicas administracao" (Expand Search), "publica administration" (Expand Search), "publico administration" (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 ((("publicoooa administration") OR ("publicas administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoooa administration\") OR (\"publicas administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoooa administration ) OR ( publicas administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoooa administration") OR ("publicas administration"))))*.