Perhaps you should try some spelling variations:
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
3 communication » 4 communication, de communication, data communication
communication 4 » communication _, communication a, communication 3
typology 4.1 » typology 2.2.1, typology _, ecology 4.1
variation 6 » variation _, variation des
der 3 » der _, der e, des 3
4 der » _ der, 2 der, 3 der

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typology 4.1 ((variation 6) OR (variations _)) der 3 communication 4 der developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology 4.1 ((variation 6) OR (variations _)) der 3 communication 4 der developpement en afrique.*.