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

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