Perhaps you should try some spelling variations:
"public publica administracion colombia" » "public publica administration colobia", "public publica administrativo colombia", "public publica administracion economica", "public public administration colombia", "public justicia administracion colombia", "public la administracion colombia"
"public policy administration colombia" » "public police administration colombia", "public public administration colombia", "public policia administrativa colombia"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("public policy administration colombia") or ("public publica administracion colombia"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("public policy administration colombia") OR ("public publica administracion colombia")).
• Removing quotes may allow a broader search: (( public policy administration colombia ) or ( public publica administracion colombia )).
• Adding a wildcard symbol may retrieve word variants: (("public policy administration colombia") or ("public publica administracion colombia"))*.