Perhaps you should try some spelling variations:
3.4.1 communication » 3.4.2 communication, 3.4.4 communication, 9.4.1 communication
care information » more information, change information, trade information
information when » information what, information war, information wants
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
technology care » technology case, technology curve, technology can
coal 3.4.1 » coal 3.2.2, tool 3.4.1, coal 1.4.2
de afrique » de l'afrique, en afrique, l afrique
when coal » when goal, women coal, when can
costs et » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology care information when coal 3.4.1 communication costs et developpement de afrique.*.