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)
"publicaso administration" » "publicaaso administration" (Expand Search), "publicoaso administration" (Expand Search), "publicasaso administration" (Expand Search), "publicaso administracao" (Expand Search), "publicas administration" (Expand Search), "publica administration" (Expand Search), "publico administration" (Expand Search)
"publicoosaaa administration" » "publicaoosaaa administration" (Expand Search), "publicooosaaa administration" (Expand Search), "publicasoosaaa administration" (Expand Search), "publicoosaaa 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 ("publicaso administration"))) OR ("publicoosaaa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicaso administration\"))) OR (\"publicoosaaa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicaso administration ))) OR ( publicoosaaa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicaso administration"))) OR ("publicoosaaa administration"))*.