Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
3.2 communication » 3 communication, 2.3 communication, de communication
der developpement » de developpement, des developpements, leur developpement
technology usage » technology use, technology age, technology users
usage inflation » wage inflation, age inflation, usage information
des afrique » en afrique, de l'afrique
rate range » rate change, age range, rate changes
range 3.2 » range 3.7, range 5.2, range 6.2

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

• Adding a wildcard symbol may retrieve word variants: technology usage inflation rate range 3.2 communication phase der developpement des afrique.*.