Perhaps you should try some spelling variations:
2.3.1 communication » 2.3.1.1 communication, 2.3 communication, 2.2.3 communication
communication phase » communication case, communication based, communication paper
der developpement » de developpement, des developpements, leur developpement
inflation gerold » inflation levels, inflation across, inflation der
developpement en » developpement et, developpement des, developpement de
gerold prices » gold prices, world prices, gold price
prices 2.3.1 » prices 2.3.4, prices 2.3.5, prices 2.3.6

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

• Adding a wildcard symbol may retrieve word variants: technology _ inflation gerold prices 2.3.1 communication phase der developpement en afrique.*.