Perhaps you should try some spelling variations:
information sand » formation sand, information islands, information demand
1 communication » 10 communication, 3 communication, 4 communication
technologien 5 » technologien _, technologien 1, technologien 4
5 information » 2 information, 1 information, 2.1 information
sand dune » sand dunes, sand due
4 areas » 2 areas, 4 areal, 3.4 areas
1 areas » 1 area, 2 areas, 2.1 areas
dune 1 » june 1, dunker 1

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 information sand dune 1 communication costs _ developing ((4 areas) OR (1 areas)).~".
• Adding a wildcard symbol may retrieve word variants: technologien 5 information sand dune 1 communication costs _ developing ((4 areas) OR (1 areas)).*.