Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
information have » information how, information harness, transformation have
developpement en » developpement et, developpement des, developpement de
technologie erp » technologie amp, technologie der, technologie e.v
erp information » crop information, amp information, psp information
have trade » slave trade, have made
trade 2.3 » trade 2.2, trade 2.1, trade 1.3

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

• Adding a wildcard symbol may retrieve word variants: technologie erp information have trade 2.3 communication costs _ developpement en afrique.*.