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)
"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)
"publicasaaao administration" » "publicaasaaao administration" (Expand Search), "publicoasaaao administration" (Expand Search), "publicosasaaao administration" (Expand Search), "publicasaaao administracao" (Expand Search), "publicaaaao administration" (Expand Search), "publicoaaao 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 ("publicas administration"))) OR ("publicasaaao administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicas administration\"))) OR (\"publicasaaao administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicas administration ))) OR ( publicasaaao administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicas administration"))) OR ("publicasaaao administration"))*.