Perhaps you should try some spelling variations:
2.2.5.7 communication » 2.2.5.4 communication, 2.2.3 communication, 2.3.1.1 communication
developpement il » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
technology 2.3 » technology 2.2, technology 2.1, technology 3.3
prices 2.2.5.7 » prices 2.2.2, prices 2.3.5
2.3 inflation » 2.3.1 inflation, 5.33 inflation, 2 inflation
il afrique » l afrique, en afrique
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 2.3 inflation _ prices 2.2.5.7 communication costs 4 developpement il afrique.*.