Perhaps you should try some spelling variations:
power development » water development, career development, hydropower development
de communication » mobile communication, online communication
communication 5 » communication _, communication a, communication 3
development en » developpement en, development menu, development eco
der variation » de variation, does variation, die variation
variation did » variation des, variation der, variation im
typology der » typologie der, typologien der, typologie des
5 power » 2 power, 3 power, 4 power
qos de » hos de

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: typology der variation did qos de communication 5 power development en afrique.*.