Perhaps you should try some spelling variations:
2.5.1 communication » 4.5.1 communication, 2.2.3 communication, 2.5 communication
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
technology open » technology one, technology other, technology o140
innovation rate » innovation race, innovation create, innovation state
scale 2.5.1 » scales 2.5.2, scale 5.1, scale 2.1
rate scale » ratio scale, site scale, data scale
de afrique » de l'afrique, en afrique, l afrique
costs le » 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 open innovation rate scale 2.5.1 communication costs le developpement de afrique.*.