Perhaps you should try some spelling variations:
1.1b communication » 1.1 communication, 4.1 communication, 1.3 communication
developpement il » developpement de, developpement et, developpement du
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
il afrique » l afrique, en afrique
from 1.1b » from 11, from 1.2, from 1.3

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 1.1b communication costs _ developpement il afrique.*.