Perhaps you should try some spelling variations:
communications cost » communications costs, communications cross, communication costs
day communications » data communications, do communications, way communication
technologies case » technologies based, technologies can, technologies create
case information » care information, based information, phase information
developing city » developing cities, developing data, developing high
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
city africa » china africa, cults africa
3.2 modern » 2.2 modern, 4.2 modern, 11.2 modern

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

• Adding a wildcard symbol may retrieve word variants: technologies case information 3.2 modern day communications cost 2.4 developing city africa.*.