Perhaps you should try some spelling variations:
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
inflation target » inflation targeting, inflation rate, inflation rates
developpement de » developpement des, developpement durable
technology 2.2 » technology _, technology 1, technology 3
2.2 inflation » 2.3 inflation, 3.2 inflation, 2.2.4 inflation
species 1.1 » species 12.1, species 7.1, species 1.2
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 inflation target species 1.1 communication costs _ developpement de afrique.*.