Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement de » developpement des, developpement durable
2.2 integration » 3.2 integration, 5.2 integration, 3.3 integration
integration wie » integration sowie, integration wage, integration wege
technology 2.2 » technology _, technology 1, technology 3
de afrique » de l'afrique, en afrique, l afrique
wie ebene » die ebene, die ebenen, wie eine
ebene 6.2 » ebene 4.2, ebene 5.2, ebene 6.1.2

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 integration wie ebene 6.2 communication costs _ developpement de afrique.*.