Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicaoas administration" » "publicaaoas administration" (Expand Search), "publicoaoas administration" (Expand Search), "publicasaoas administration" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search)
"publicosa administracao" » "publicaosa administracao" (Expand Search), "publicoosa administracao" (Expand Search), "publicasosa administracao" (Expand Search), "publicos administracao" (Expand Search), "publica administracao" (Expand Search), "publico 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 ("publicaoas administration"))) OR ("publicosa administracao"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicaoas administration\"))) OR (\"publicosa administracao\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicaoas administration ))) OR ( publicosa administracao )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicaoas administration"))) OR ("publicosa administracao"))*.