Perhaps you should try some spelling variations:
15 communication » 5 communication, 1 communication, 10 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 15 » from 10
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 15 communication costs a developpement l afrique.*.