Perhaps you should try some spelling variations:
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
developpement en » developpement et, developpement des, developpement de
technologien 12 » technologies 12, technologien 1, technologien 3.2
inflation cases » inflation causes, inflation crises, inflation rates
12 inflation » 10 inflation, 2 inflation, 3.2 inflation
cases case » causes case, case case, crises case
case 3.1 » case 4.1, case 3.2, case 1

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

• Adding a wildcard symbol may retrieve word variants: technologien 12 inflation cases case 3.1 communication costs _ developpement en afrique.*.