Perhaps you should try some spelling variations:
open communication » human communication, 3 communication, 4 communication
du developpement » de developpement, le developpement, et developpement
developpement et » developpement des, developpement de, development east
variation 27 » variation 7, variation 2.1, variation _
variation 2 » variation _, variation 6, variation 5
et afrique » en afrique, l afrique
der open » der oper, der opec, der tropen
a du » a d, a de, a u

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 _ ((variation 2) OR (variation 27)) der open communication a du developpement et afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology _ ((variation 2) OR (variation 27)) der open communication a du developpement et afrique.*.