Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search)
"publico administracao" » "publicao administracao" (Expand Search), "publicaso administracao" (Expand Search), "publicoso administracao" (Expand Search), "publica administracao" (Expand Search)
"publicosas administration" » "publicaosas administration" (Expand Search), "publicasosas administration" (Expand Search), "publicososas administration" (Expand Search), "publicasas administration" (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 ("publico administracao"))) OR ("publicosas administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publico administracao\"))) OR (\"publicosas administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publico administracao ))) OR ( publicosas administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publico administracao"))) OR ("publicosas administration"))*.