Perhaps you should try some spelling variations:
tradition challenging » translation challenging, reduction challenging, traditions changing
challenging people » changing people, challenges people, challenging problems
4 communication » 3 communication, 5.4 communication, de communication
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
technology law » technology 1, technology 2.2, technology 3
law tradition » la tradition, a tradition, legal tradition
l afrique » en afrique
people 4 » people _, people a, people 1
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 law tradition challenging people 4 communication costs 4 developpement l afrique.*.