Perhaps you should try some spelling variations:
actividades administrativo » actividades administrativas, actividad administrativa, autoridades administrativas
administrativa zonas » administrativa una, administrativa con, administrativa los
administrativo acto » administrativo ante, administrativo a, administrativo como
acto economico » factor economico, macro economico, facto economic
economicas del » economicas de, economicos del, economica de
economica del » economica de, economico del
de derecho » del derecho, de derechos

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( actividades administrativo acto economico de derecho ) or ( gestion administrativa zonas ((economicas del) OR (economica del)) derecho ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( actividades administrativo acto economico de derecho ) OR ( gestion administrativa zonas ((economicas del) OR (economica del)) derecho )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( actividades administrativo acto economico de derecho ) or ( gestion administrativa zonas ((economicas del) OR (economica del)) derecho ))".
• Adding a wildcard symbol may retrieve word variants: (( actividades administrativo acto economico de derecho ) or ( gestion administrativa zonas ((economicas del) OR (economica del)) derecho ))*.