Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
technology trade » technology trends, technology transfer, technology transfers
developpement de » developpement des, developpement durable
integration wie » integration sowie, integration wage, integration wege
de afrique » de l'afrique, en afrique, l afrique
wie space » white space, wie sprache, time space
space 4.2 » space 3.2, space 2.2, space 4.3

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

• Adding a wildcard symbol may retrieve word variants: technology trade integration wie space 4.2 communication costs _ developpement de afrique.*.