Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
technology case » technology based, technology can, technology change
case insulation » base insulation, cable insulation, case consultation
insulation wage » insulation case, insulation layer, insulation glass
a developpement » au developpement, de developpement, le developpement
des afrique » en afrique, de l'afrique
wage time » age time, large time, stage time
time 4.1 » time 4.4, time 4.2, time 4.3
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 case insulation wage time 4.1 communication costs a developpement des afrique.*.