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)
"publicasaa administration" » "publicaasaa administration" (Expand Search), "publicoasaa administration" (Expand Search), "publicasasaa administration" (Expand Search), "publicasaa administracao" (Expand Search), "publicas administration" (Expand Search)
"publicooaas administration" » "publicaooaas administration" (Expand Search), "publicoooaas administration" (Expand Search), "publicasooaas administration" (Expand Search), "publicooaas 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 ((("publicasaa administration") OR ("publicooaas administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicasaa administration\") OR (\"publicooaas administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicasaa administration ) OR ( publicooaas administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicasaa administration") OR ("publicooaas administration"))))*.