Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
gdp communication » de communication, amp communication, up communication
technologien dis » technologien des, technologien als, technologien im
information case » information based, information can, information costs
dis information » mis information, aids information, des informations
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
case debt » rate debt, case des
cost 2.2 » costs 2.2, cost 2.4, cost 3.2

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information case debt gdp communication cost 2.2 developing _ area.*.