Perhaps you should try some spelling variations:
actividades administrativa » actividades administrativas, actividad administrativa, autoridades administrativas
gestion administrative » gestion administrativa, gestion administrativo, gestao administrativa
administrative appeal » administrative area, administrativa actual, administrativa area
impactos economico » impactos economicos, impacto economico, aspectos economicos
impacto ecologico » impacto tecnologico, impacto economico, impacto psicologico
appeal economica » areas economica, area economica, capital economico
economica en » economica del, economica de
en derechos » en derecho, de derechos, los derechos
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 administrativa ((impactos economico) OR (impacto ecologico)) de derecho ) or ( gestion administrative appeal economica en derechos ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( actividades administrativa ((impactos economico) OR (impacto ecologico)) de derecho ) OR ( gestion administrative appeal economica en derechos )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( actividades administrativa ((impactos economico) OR (impacto ecologico)) de derecho ) or ( gestion administrative appeal economica en derechos ))".
• Adding a wildcard symbol may retrieve word variants: (( actividades administrativa ((impactos economico) OR (impacto ecologico)) de derecho ) or ( gestion administrative appeal economica en derechos ))*.