Perhaps you should try some spelling variations:
7.5 communication » 3.5 communication, 2.5 communication, 2.3 communication
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
prices 7.5 » prices 5, prices 2.4, prices 2.1
de afrique » de l'afrique, en afrique, l afrique
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation _ prices 7.5 communication costs a developpement de afrique.*.