Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
inflation places » inflation policies, inflation process, inflation rates
places spaces » place space
envelopment l » development li, development 1
technology d » technology 1, technology 3, technology 4
d inflation » _ inflation, 2 inflation, 6 inflation
spaces 4.2 » space 4.2, spaces 4.1, spaces 6.2
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 d inflation places spaces 4.2 communication cost data envelopment l afrique.*.