Perhaps you should try some spelling variations:
informal communications » informal communication, internal communications, information communications
communications media » communication media, communication india, communications series
developpement en » developpement et, developpement des, developpement de
variation using » variations during, variation und, variation among
apologien der » typologien der, apologie des, ideologien der
der variation » de variation, does variation, die variation
dbs informal » vs informal, b informal, do informal
using dbs » using dcs, using ddms, using dits

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

• Adding a wildcard symbol may retrieve word variants: apologien der variation using dbs informal communications media _ developpement en afrique.*.