Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
way communication » why communication, daily communication, data communication
technologies ser » technologies series, technologies sector, technologies _
ser information » user information, der information, users information
11.5 developing » 1.5 developing, 1.1.2 developing, 1.3 developing
developing de » developing e, developing ce, developing deep
cost 11.5 » cost 11.3, costs 11.1, costs 11.4
de africa » does africa, de america, use africa

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

• Adding a wildcard symbol may retrieve word variants: technologies ser information contents _ way communication cost 11.5 developing de africa.*.