Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information space » information search, information service, information science
key communication » grey communication, de communication, why communication
a information » 2 information, 1 information
envelopment l » development li, development 1
technology a » technology 1, technology 3, technology 4
space advice » some advice, sales advice, site advice
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 a information space advice key communication cost data envelopment l afrique.*.