Perhaps you should try some spelling variations:
communication model » communication media
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement de » developpement des, developpement durable
inflation gross » inflation across, inflation process, information gross
a developpement » au developpement, de developpement, le developpement
technology 3.2 » technology 2.2, technology 3.1, technology 2
3.2 inflation » 12 inflation, 2.3 inflation, 3.2 isolation
gross prices » cross price, goods prices, gross proceeds
prices 6.2 » prices 3.2, prices 4.2, prices 5.2
de afrique » de l'afrique, en afrique, l afrique
model a » model 1

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

• Adding a wildcard symbol may retrieve word variants: technology 3.2 inflation gross prices 6.2 communication model a developpement de afrique.*.