Perhaps you should try some spelling variations:
technologies user » technologies ser, technologies used, technologies uses
use communication » une communication, de communication, causes communication
user interaction » computer interaction
interaction cost » interaction counts, interaction about, interaction how
2015 development » 2 development, 3.1 development, 5 development
development li » development lid, development lie, development lin
costs 2015 » costs 2.1, costs 2.5, costs 20
li afrique » l afrique, en afrique
cost data » test data
data use » data used, data usage, data und

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

• Adding a wildcard symbol may retrieve word variants: technologies user interaction cost data use communication costs 2015 development li afrique.*.