Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications cost » communications costs, communications cross, communication costs
technology social » technology series
social attentions » social tensions, special attention, local attention
rate developments » trade developments, price developments, site development
attentions from » attention from, attenuation from
which mobile » which model, which more, which role
from which » from rich
cost rate » cost ratio, cost data, cost base

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

• Adding a wildcard symbol may retrieve word variants: technology social attentions from which mobile communications cost rate developments _ car.*.