Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
rate information » trade information, care information, age information
information when » information what, information war, information wants
developpement en » developpement et, developpement des, developpement de
technology rate » technology state, technology role, technology related
4 developpement » de developpement, le developpement, et developpement
when map » when cap, when a, when can
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology rate information when map 4.1 communication costs 4 developpement en afrique.*.