Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
developpement du » developpement de, developpement des, developpement et
technology bei » technology bi, technology best, technology b2b
bei inflation » der inflation, does inflation, area inflation
du afrique » en afrique, l afrique, de l'afrique
rate file » case file, rate fee, rate firm
file 2.3 » file 2.7, file 23, file 2.4.3
3 zu » 3 zur, 3 zum, 1 zu
2 zu » 2 zur, 2 zum

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technology bei inflation rate file 2.3 communication ((3 zu) OR (2 zu)) developpement du afrique.~".
• Adding a wildcard symbol may retrieve word variants: technology bei inflation rate file 2.3 communication ((3 zu) OR (2 zu)) developpement du afrique.*.