Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3 communications » 3 communication, 2 communications, 4 communications
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
contents head » contents lead, contents map, contents a
3 developing » 3 development
developing 1 » developing _, developing a, developing e
costs 3 » costs _, costs 4, costs a
head 3 » head _, head a, head 3.2

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

• Adding a wildcard symbol may retrieve word variants: technologies a information contents head 3 communications costs 3 developing 1 africa.*.