Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
speed communications » based communication, cell communications, guinea communications
math information » catch information, much information, health information
developpement de » developpement des, developpement durable
technology math » technology paths, technology mit, technology make
4 developpement » de developpement, le developpement, et developpement
information 7 » information 2, information 3, information 1
role speed » road speed
de afrique » de l'afrique, en afrique, l afrique
costs 4 » costs _, costs a, costs 4.2
7 role » 3 role, 4 role, 2 role

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

• Adding a wildcard symbol may retrieve word variants: technology math information 7 role speed communications costs 4 developpement de afrique.*.