Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement l » developpement il, developpement la, developpement de
variation bei » variation des, variation der, variation _
dem personal » der personal, de personal, des personal
l afrique » en afrique
bei dem » bei der, bei den
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 bei dem personal communication ((a du) OR (a d)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology _ variation bei dem personal communication ((a du) OR (a d)) developpement l afrique.*.