Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
des developpement » des developpements, de developpement, le developpement
developpement de » developpement des, developpement durable
inflation gas » inflation das, inflation bias, inflation tax
technology 3 » technology _, technology 1, technology 4
3 inflation » _ inflation, 2 inflation, 6 inflation
prices 2.1 » prices 2.4, prices 2.3, prices 3.1
phase des » phasen des, phase der

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

• Adding a wildcard symbol may retrieve word variants: technology 3 inflation gas prices 2.1 communication phase des developpement de l'afrique.*.