Perhaps you should try some spelling variations:
4.3.2 communication » 3.3.2 communication, 4.2.2 communication, 4.3 communication
innovation state » innovation space, innovation rate, innovation strategy
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
technology gap » technology 1, technology 2.2, technology 3
gap innovation » harp innovation, up innovation, eat innovation
state case » states case, states cases, state based
case 4.3.2 » case 4.6.2, case 5.3.2, cases 2.3.2
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 gap innovation state case 4.3.2 communication costs le developpement de afrique.*.