Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
developpement en » developpement et, developpement des, developpement de
inflation rates » inflation rate
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
rates case » rates cape, states case, rates east
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: technology 1 inflation rates case 3.1 communications costs _ developpement en afrique.*.