Perhaps you should try some spelling variations:
communication studies » communication series, communication services, communication strategies
technologie energy » technology energy, technologies general, technologie der
development plan » development plans, development planning, development policy
plan american » pan american, latin american, asian american
transition a » transition _
studies 2 » studies 3, studies 5, studies 4
6.2 risk » 2.2 risk, 4.2 risk, 3.2 risk
a 6.2 » a 3.2, a 4.2, a 6.1

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

• Adding a wildcard symbol may retrieve word variants: technologie energy transition a 6.2 risk communication studies 2 development plan american.*.