Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
technology fully » technology fund, technology field, technology flow
fully integrated » eu integrated
data development » delta development, doha development, data envelopment
calls 3.5 » calls 5.5, calls 8.5, call 4.5
cost data » test data
1 afrique » l afrique, en afrique, 1 enrique

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

• Adding a wildcard symbol may retrieve word variants: technology fully integrated rural calls 3.5 communication cost data development 1 afrique.*.