Perhaps you should try some spelling variations:
interaction terms » interaction term
technologies 3.1 » technologies 2.1, technologies 3.2, technologies _
up communication » amp communication, de communication, 3 communication
3.1 interaction » 3.2 interaction, 3 interaction, 2 interaction
development li » development lid, development lie, development lin
4 development » 2 development, 4 developing
li afrique » l afrique, en afrique
data up » data us, data und, data use
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 3.1 interaction terms data up communication costs 4 development li afrique.*.