Perhaps you should try some spelling variations:
trade development » software development
communication 1 » communication _, communication a, communication 3
des variation » does variation, de variation, der variation
development l » development li, development 1, development law
typology des » typologie des, typologie der, typology _
der massen » der kassen
l afrique » en afrique
der mass » der maske, over mass, air mass
1 trade » 4 trade

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 des variation _ ((der mass) OR (der massen)) communication 1 trade development l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology des variation _ ((der mass) OR (der massen)) communication 1 trade development l afrique.*.