Perhaps you should try some spelling variations:
interaction labour » interaction about, intervention labour, interaction layer
7.6 communication » 7.6.2 communication, 11.6 communication, 2.3 communication
cost interaction » host interaction, host interactions, robot interaction
technology cost » technology case, technology can, technology choice
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
labour prices » labour process, labor price, labour practices
prices 7.6 » prices 4.6, prices 6.6, prices 7.5
l afrique » en 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 cost interaction labour prices 7.6 communication costs a developpement l afrique.*.