Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
developpement de » developpement des, developpement durable
existing effect » mediating effect, testing effect
technology do » technology does, technology dlt, technology 1
do existing » co existing, _ existing, 2 existing
effect from » effects from, expect from, effect firm
de afrique » de l'afrique, en afrique, l afrique
from 3.2 » from 1.2, from 3.1, from 3.2.2

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

• Adding a wildcard symbol may retrieve word variants: technology do existing effect from 3.2 communication costs _ developpement de afrique.*.