Perhaps you should try some spelling variations:
die developpement » de developpement, le developpement, du developpement
technology energy » technology early, technology emerging, technology experts
transition based » translation based, transition case, tradition based
ec communication » de communication, 3 communication, 4 communication
des africa » does africa, yes africa, de africa
based how » based host, based hiv, based new
media die » medien die, media age
how ec » how eu, how ecec, how ecte

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

• Adding a wildcard symbol may retrieve word variants: technology energy transition based how ec communication media die developpement des africa.*.