Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
developpement de » developpement des, developpement durable
selection tax » selection tag, selection task, selection a
technology 2 » technology _, technology 1, technology 3
2 selection » 3.2 selection, 2.1 selection, de selection
de afrique » de l'afrique, en afrique, l afrique
tax 3.2 » tax 3.1, tax 3.3, tax 3.4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology 2 selection tax tax 3.2 communication costs _ developpement de afrique.*.