Perhaps you should try some spelling variations:
6.13 communication » 6.1.3 communication, 2.3 communication, 4.1 communication
informationen und » informations und, information und, transformationen und
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
technology von » technology vi, technology vt, technology vision
de afrique » de l'afrique, en afrique, l afrique
case 6.13 » case 6.3, case 6.1, case 6.12
und case » und care, und cash, id case
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 von informationen und case 6.13 communication costs 4 developpement de afrique.*.