Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement la » developpement de, developpement et, developpement du
der variation » de variation, does variation, die variation
variation bei » variation des, variation der, variation _
typology der » typologie der, typologien der, typologie des
la afrique » l afrique, la fabrique, en afrique
bei a » bei _
a des » a das
a 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 der variation bei a personal communication ((a des) OR (a der)) developpement la afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology der variation bei a personal communication ((a des) OR (a der)) developpement la afrique.*.