Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
information based » information case, information bank, transformation based
aids information » chandos information, series information
do communication » do communications, de communication, ngo communication
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing 1 » developing _, developing a, developing e
based debt » based deep, based direct
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 aids information based debt do communication cost 2.2 developing 1 areas.*.