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)
"publicaaoss administration" » "publicaaaoss administration" (Expand Search), "publicoaaoss administration" (Expand Search), "publicasaaoss administration" (Expand Search), "publicaaoss administracao" (Expand Search)
"publicooa administration" » "publicaooa administration" (Expand Search), "publicoooa administration" (Expand Search), "publicasooa administration" (Expand Search), "publicooa administracao" (Expand Search), "publica administration" (Expand Search), "publico 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 ("publicaaoss administration"))) OR ("publicooa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicaaoss administration\"))) OR (\"publicooa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicaaoss administration ))) OR ( publicooa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicaaoss administration"))) OR ("publicooa administration"))*.