Perhaps you should try some spelling variations:
online communications » online communication, online kommunikation, mobile communications
dam developpement » de developpement, du developpement, au developpement
developpement de » developpement des, developpement durable
four variation » zur variation, about variation, color variation
typology four » typologie fur, typology from, typology how
variation des » variation _, variation 6, variation series
de afrique » de l'afrique, en afrique, l afrique
des der » des dr, des ddr, des dem

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

• Adding a wildcard symbol may retrieve word variants: typology four variation des der online communications _ dam developpement de afrique.*.