Perhaps you should try some spelling variations:
2.3.4 communication » 12.2.4 communication, 12.4.4 communication, 2.3 communication
communication phase » communication case, communication based, communication paper
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
inflation und » inflation index, inflation _, inflation tax
prices 2.3.4 » prices 2.3.1, prices 2.3.5, prices 2.3.6
und prices » fund prices, land prices, bond prices
l afrique » en afrique
phase a » phase 1, phase _, phase 2

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

• Adding a wildcard symbol may retrieve word variants: technology _ inflation und prices 2.3.4 communication phase a developpement l afrique.*.