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)
"publicaasaas administration" » "publicaaasaas administration" (Expand Search), "publicoaasaas administration" (Expand Search), "publicasaasaas administration" (Expand Search), "publicaasaas administracao" (Expand Search)
"publicaso administration" » "publicaaso administration" (Expand Search), "publicoaso administration" (Expand Search), "publicasaso administration" (Expand Search), "publicaso administracao" (Expand Search), "publicas administration" (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 ("publicaasaas administration"))) OR ("publicaso administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicaasaas administration\"))) OR (\"publicaso administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicaasaas administration ))) OR ( publicaso administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicaasaas administration"))) OR ("publicaso administration"))*.