Perhaps you should try some spelling variations:
2.5 communication » 2.3 communication, 2.7 communication, 3.5 communication
aids information » chandos information, series information
du developpement » de developpement, le developpement, et developpement
developpement de » developpement des, developpement durable
technology aids » technology a, technology age, technology asia
prices 2.5 » prices 2.4, prices 2.1, prices 2.3
de afrique » de l'afrique, en afrique, l afrique
costs du » 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 aids information gap prices 2.5 communication costs du developpement de afrique.*.