Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
der developpement » de developpement, des developpements, leur developpement
inflation food » inflation good, inflation from, inflation und
technology 6 » technology _, technology 1, technology 3
6 inflation » _ inflation, 2 inflation, d inflation
des afrique » en afrique, de l'afrique
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1

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

• Adding a wildcard symbol may retrieve word variants: technology 6 inflation food prices 3.1 communication phase der developpement des afrique.*.