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)
"publicoooaas administration" » "publicaoooaas administration" (Expand Search), "publicooooaas administration" (Expand Search), "publicasoooaas administration" (Expand Search), "publicoooaas administracao" (Expand Search)
"publicosoa administration" » "publicaosoa administration" (Expand Search), "publicoosoa administration" (Expand Search), "publicasosoa administration" (Expand Search), "publicosoa administracao" (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 ("publicoooaas administration"))) OR ("publicosoa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoooaas administration\"))) OR (\"publicosoa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoooaas administration ))) OR ( publicosoa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoooaas administration"))) OR ("publicosoa administration"))*.