Perhaps you should try some spelling variations:
2.3.5 communication » 2.3 communication, 2.2.3 communication, 2.5 communication
communication mode » communication model, communication modes, communication module
a developpement » au developpement, de developpement, le developpement
technology 3 » technology _, technology 1, technology 4
prices 2.3.5 » prices 2.3.1, prices 2.3.4, prices 2.3.6
3 inflation » _ inflation, 2 inflation, 6 inflation
des afrique » en afrique, de l'afrique
mode a » mode ad, mode _, code a

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

• Adding a wildcard symbol may retrieve word variants: technology 3 inflation _ prices 2.3.5 communication mode a developpement des afrique.*.