Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
der developpement » de developpement, des developpements, leur developpement
inflation world » inflation gerold, innovation world, inflation build
developpement l » developpement il, developpement la, developpement de
technology 3.2 » technology 2.2, technology 3.1, technology 2
3.2 inflation » 12 inflation, 2.3 inflation, 3.2 isolation
world prices » food prices
prices 4.1 » price 4.1, prices 2.1, prices 3.1
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 3.2 inflation world prices 4.1 communication phase der developpement l afrique.*.