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)
"publicasoaas administration" » "publicaasoaas administration" (Expand Search), "publicoasoaas administration" (Expand Search), "publicasasoaas administration" (Expand Search), "publicasoaas administracao" (Expand Search)
"publicosas administration" » "publicaosas administration" (Expand Search), "publicoosas administration" (Expand Search), "publicasosas administration" (Expand Search), "publicosas administracao" (Expand Search), "publicas administration" (Expand Search), "publicos 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 ("publicasoaas administration"))) OR ("publicosas administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicasoaas administration\"))) OR (\"publicosas administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicasoaas administration ))) OR ( publicosas administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicasoaas administration"))) OR ("publicosas administration"))*.