Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
technology glass » technology gaps, technology giants, technology gap
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
glass location » als location, trans location
location date » location case, location die, locational data
date service » data service, update service, water service
service 2.2 » service 2.1, service 2.3, service 3.3
de afrique » de l'afrique, en afrique, l afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology glass location date service 2.2 communication costs 4 developpement de afrique.*.