Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
inflation land » inflation und, inflation can, inflation linked
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
prices 2.3 » price 2.3, prices 2.4, prices 2.1
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 1 inflation land prices 2.3 communication costs 4 developpement de l'afrique.*.