Perhaps you should try some spelling variations:
12.2.4 communication » 2.2.3 communication, 5.4 communication, 2.3 communication
developpement en » developpement et, developpement des, developpement de
technology 5.33 » technology 5.3, technology 5.3.1, technology 2.3
a developpement » au developpement, de developpement, le developpement
5.33 inflation » 3.3.3 inflation, 5.4.3 inflation, 2.3 inflation
prices 12.2.4 » prices 11.2.3, prices 14.3.4, prices 2.2.2
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 5.33 inflation _ prices 12.2.4 communication costs a developpement en afrique.*.