Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
technology 3 » technology _, technology 1, technology 4
section law » selection law, election law, reaction law
3 section » 43 section, 3 selection, 3.1 section
law rate » low rate, flow rate, law state
rate 2.3 » rates 2.3, rate 2.4, rate 4.3
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 3 section law rate 2.3 communication costs 4 developpement de l'afrique.*.