Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien dis » technologien des, technologien als, technologien im
information case » information based, information can, information costs
do communication » do communications, de communication, ngo communication
dis information » mis information, aids information, des informations
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing 1 » developing _, developing a, developing e
case debt » rate debt, case des
cost 2.2 » costs 2.2, cost 2.4, cost 3.2
debt do » debt gdp, debt how
1 areas » 1 area, 2 areas, 4 areas

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 do communication cost 2.2 developing 1 areas.*.