Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
ngo communication » togo communications, de communication, 3 communication
aids information » chandos information, series information
3.3 developing » 4 developing, 2 developing, 1 developing
developing a » developing _
4.2 debt » 4.2 der, 4.2 deep, 2.5 debt
debt ngo » debt do
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
a areas » 1 areas, 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 4.2 debt ngo communication cost 3.3 developing a areas.*.