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

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 maske)) communication 3 sme development l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology des variation _ ((der mass) OR (der maske)) communication 3 sme development l afrique.*.