Perhaps you should try some spelling variations:
une communication » d'une communication, ante communication, de communication
technologien 5 » technologien _, technologien 1, technologien 4
formation sand » formation bank, formation can, formation und
5 formation » 1 formation, a formation, 4.5 formation
sand dune » sand dunes, sand due
dune une » dune un, donne une, dans une
4 areas » 2 areas, 4 areal, 3.4 areas
1 areas » 1 area, 2 areas, 2.1 areas

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologien 5 formation sand dune une communication costs _ developing ((4 areas) OR (1 areas)).~".
• Adding a wildcard symbol may retrieve word variants: technologien 5 formation sand dune une communication costs _ developing ((4 areas) OR (1 areas)).*.