Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
communication 5 » communication _, communication a, communication 3
sme development » trade development
typologien der » typologie der, typologie des, apologien der
development ds » development d, development does, development desd
der variation » de variation, does variation, die variation
ds afrique » en afrique, l afrique, de l'afrique
6 dem » 6 der, 6 de, a dem
_ dem » _ der, _ den
5 sme » 5 some, 5 same, _ sme

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: "typologien der variation ((6 dem) OR (_ dem)) device communication 5 sme development ds afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologien der variation ((6 dem) OR (_ dem)) device communication 5 sme development ds afrique.*.