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)
"publicooss administration" » "publicaooss administration" (Expand Search), "publicoooss administration" (Expand Search), "publicasooss administration" (Expand Search), "publicooss administracao" (Expand Search), "publicos administration" (Expand Search)
"publicasos administration" » "publicaasos administration" (Expand Search), "publicoasos administration" (Expand Search), "publicasasos administration" (Expand Search), "publicasos 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 ("publicooss administration"))) OR ("publicasos administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicooss administration\"))) OR (\"publicasos administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicooss administration ))) OR ( publicasos administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicooss administration"))) OR ("publicasos administration"))*.