Perhaps you should try some spelling variations:
13.4 communication » 1.4 communication, 3.4 communication, 13.4.5 communication
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
technology gaps » technology gap
inflation rates » inflation rate
gaps inflation » has inflation, grade inflation, rapid inflation
space 13.4 » space 3.2, space 3.3, space 4.4
de afrique » de l'afrique, en afrique, l afrique
costs et » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology gaps inflation rates space 13.4 communication costs et developpement de afrique.*.