Perhaps you should try some spelling variations:
"contenciosa administrativa. administracion" » "contencioso administrativa. administracion", "contencioso administrativas. administracion", "contencioso administrativo. administracion"
"ciencias administrativas. administracion" » "ciencias administrativo. administracion", "ciencias administrative. administracion", "ciencias administration. administracion"

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: (("ciencias administrativas. administracion") or ("contenciosa administrativa. administracion"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("ciencias administrativas. administracion") OR ("contenciosa administrativa. administracion")).
• Removing quotes may allow a broader search: (( ciencias administrativas. administracion ) or ( contenciosa administrativa. administracion )).
• Adding a wildcard symbol may retrieve word variants: (("ciencias administrativas. administracion") or ("contenciosa administrativa. administracion"))*.