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
der developpement » de developpement, des developpements, leur developpement
technology 10.7 » technology 10.4, technology 10.3, technology 1.7
developpement l » developpement il, developpement la, developpement de
10.7 inflation » 10 inflation, 9.7 inflation, 12 inflation
inflation do » inflation co, inflation der, inflation das
prices 2.3.4 » prices 2.3.1, prices 2.3.5, prices 2.3.6
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 10.7 inflation do prices 2.3.4 communication phase der developpement l afrique.*.