Perhaps you should try some spelling variations:
information sand » formation sand, information islands, information demand
technologien 5 » technologien _, technologien 1, technologien 4
5 information » 2 information, 1 information, 2.1 information
developing 1 » developing _, developing a, developing e
dune le » dunes le, dune de, dune la
1 areas » 1 area, 2 areas, 4 areas
due le » que le, dues les

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