Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
technology use » technology 1, technology 2.2, technology 3
use induction » rule induction, use reduction, use introduction
induction age » induction one, introduction age, induction after
age changes » wage changes, large changes, rate changes
changes 3.2 » change 3.2, changes 5.2, changes 4.2
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 use induction age changes 3.2 communication costs a developpement de afrique.*.