Perhaps you should try some spelling variations:
4.5.1 communication » 4.2.1 communication, 4.1 communication, 3.4.1 communication
technology chain » technology can, technology china, technology changing
chain innovation » chain integration, open innovation, green innovation
innovation notes » innovation nodes, innovation node, innovation contest
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
notes more » notes note, rates more, notes modern
more 4.5.1 » more 4.5.2, more 4.5.4, more 2.4.1
de afrique » de l'afrique, en afrique, l 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 chain innovation notes more 4.5.1 communication costs a developpement de afrique.*.