Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technologien aids » technologien als, technologien ad, technologien des
do communications » 10 communications, 14 communications, 2 communications
aids information » chandos information, series information
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
information 2 » information 3
developing 1 » developing _, developing a, developing e
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
debt do » debt gdp, debt how
1 areas » 1 area, 2 areas, 4 areas
2 debt » 3 debt, 4 debt, 2.5 debt

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information 2 debt do communications costs 2.2 developing 1 areas.*.