Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
existing effect » mediating effect, testing effect
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
technology 2 » technology _, technology 1, technology 3
effect from » effects from, expect from, effect firm
2 existing » _ existing, 3 existing, pre existing
l afrique » en afrique
from 2.3 » from 2003, from 20, from 25
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 2 existing effect from 2.3 communication costs a developpement l afrique.*.