Perhaps you should try some spelling variations:
developpement durable » developpement de
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
technology high » technology rights, technology how, technology help
4 developpement » de developpement, le developpement, et developpement
inflation a » inflation _, inflation tax, inflation rate
case 2.2 » cases 2.2, case 4.2, case 2.3
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 high inflation a case 2.2 communication costs 4 developpement durable afrique.*.