Perhaps you should try some spelling variations:
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
das developpement » des developpements, de developpement, du developpement
developpement de » developpement des, developpement durable
inflation rates » inflation rate
communication 1 » communication _, communication a, communication 3
technology use » technology 1, technology 2.2, technology 3
use inflation » push inflation, und inflation, die inflation
rates spaces » places spaces, papers spaces, spaces spaces
spaces 1.1 » spaces 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology use inflation rates spaces 1.1 communication 1 das developpement de l'afrique.*.