Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
technology price » technology rich, technology voice, technology service
developpement de » developpement des, developpement durable
inflation rates » inflation rate
4 developpement » de developpement, le developpement, et developpement
rates cases » states cases, rates rates, rates cape
de afrique » de l'afrique, en afrique, l afrique
cases 2.7 » cases 2.2, cases 2.1, case 2.7
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology price inflation rates cases 2.7 communication costs 4 developpement de afrique.*.