Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
inflation safe » inflation rate, inflation rates, inflation taxes
envelopment l » development li, development 1
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
spaces de » espaces de, spaces _, spaces 3
cost data » test data
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation safe spaces de communication cost data envelopment l afrique.*.