Perhaps you should try some spelling variations:
innovation effects » innovation effect, innovation efforts, innovating effect
25 communication » 2.5 communication, 5 communication, 2 communication
developpement la » developpement de, developpement et, developpement du
technology back » technology book, technology stacks, technology based
back innovation » back innovations, lacks innovation, track innovation
4 developpement » de developpement, le developpement, et developpement
la afrique » l afrique, la fabrique, en afrique
from 25 » from 20, from 15, from 5
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 back innovation effects from 25 communication costs 4 developpement la afrique.*.