Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
do communication » do communications, de communication, ngo communication
technologies 2 » technologies _, technologies 4
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing eu » developing e, developing eq, developing egg
contents how » content how, contents co, contents mot
eu africa » em africa, 1 africa, 11 africa
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: technologies 2 information contents how do communication cost 2.2 developing eu africa.*.