Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
tests information » costs information, gets information, testing information
key communication » grey communication, de communication, why communication
technology tests » technology thesis, technology best, technology costs
information some » information source, information stored, information space
envelopment l » development li, development 1
advice key » device key
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 tests information some advice key communication cost data envelopment l afrique.*.