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)
"publicoss administration" » "publicaoss administration" (Expand Search), "publicooss administration" (Expand Search), "publicasoss administration" (Expand Search), "publicoss administracao" (Expand Search), "publicos administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicoasa administration" » "publicaoasa administration" (Expand Search), "publicooasa administration" (Expand Search), "publicasoasa administration" (Expand Search), "publicoasa administracao" (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 ("publicoss administration"))) OR ("publicoasa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoss administration\"))) OR (\"publicoasa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoss administration ))) OR ( publicoasa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoss administration"))) OR ("publicoasa administration"))*.