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