Perhaps you should try some spelling variations:
2.3.5 communication » 2.3 communication, 2.2.3 communication, 2.5 communication
communication case » communications case, communication based, communication phase
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
inflation und » inflation index, inflation _, inflation tax
technology 1 » technology _
prices 2.3.5 » prices 2.3.1, prices 2.3.4, prices 2.3.6
1 inflation » 10 inflation, 12 inflation, _ inflation
und prices » fund prices, land prices, bond prices
de afrique » de l'afrique, en afrique, l afrique
case a » case 1, case 2, case 3

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation und prices 2.3.5 communication case a developpement de afrique.*.