Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
class communication » mass communication, plans communication, crisis communication
popularity versus » modularity versus, precarity versus
der developments » oer developments, new developments, key developments
developments you » developments box, developments about, developments from
technology a » technology 1, technology 3, technology 4
a popularity » _ popularity, 4.1 popularity, a population
versus third » versus ethics, versus them, versus time
third class » third case, third crisis

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

• Adding a wildcard symbol may retrieve word variants: technology a popularity versus third class communication phase der developments you afrique.*.