Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicoas administration" » "publicaoas administration" (Expand Search), "publicooas administration" (Expand Search), "publicasoas administration" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search), "publica administration" (Expand Search)
"publicooosas administracao" » "publicaooosas administracao" (Expand Search), "publicoooosas administracao" (Expand Search), "publicasooosas 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 ((("publicoas administration") OR ("publicooosas administracao"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoas administration\") OR (\"publicooosas administracao\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoas administration ) OR ( publicooosas administracao )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoas administration") OR ("publicooosas administracao"))))*.