Perhaps you should try some spelling variations:
oral communication » personal communication
communication law » communications law, communication layer, communication 3
development en » developpement en, development menu, development eco
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
6 first » 3 first, 1 first, 4 first

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: "typologie der variation ((6 first) OR (2 first)) oral communication law _ development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variation ((6 first) OR (2 first)) oral communication law _ development en afrique.*.