Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
developpement de » developpement des, developpement durable
inflation tax » inflation rate, inflation _, inflation target
technology 2 » technology _, technology 1, technology 3
2 inflation » 12 inflation, _ inflation, 6 inflation
de afrique » de l'afrique, en afrique, l afrique
krieg 2.2 » krieg 2.3, krieg 2.1, krieg 1.3

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

• Adding a wildcard symbol may retrieve word variants: technology 2 inflation tax krieg 2.2 communication costs _ developpement de afrique.*.