Perhaps you should try some spelling variations:
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
rate leser » rate level, rate beer
de afrique » de l'afrique, en afrique, l afrique
leser 3.1 » lesen 3.1, leser 3.2, leser 3.3
costs au » costs a, costs amy, costs _

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

• Adding a wildcard symbol may retrieve word variants: technologien _ inflation rate leser 3.1 communication costs au developpement de afrique.*.