Perhaps you should try some spelling variations:
3.1.1 communication » 3.4.1 communication, 2.3.1.1 communication, 3.1 communication
developpement il » developpement de, developpement et, developpement du
existing effect » mediating effect, testing effect
technology co » technology cost, technology code, technology can
effect strom » effect from, effects from, effect firm
co existing » _ existing, 2 existing, 3 existing
strom 3.1.1 » strom 3.1.3.1, strome 3.5.1
il afrique » l afrique, en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology co existing effect strom 3.1.1 communication costs _ developpement il afrique.*.