Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
more information » price information, trade information
information four » information source, information flows, information flow
du developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
technology more » technology moral, technology make, technology mara
case 4.2 » case 4.1, case 2
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 more information four case 4.2 communication costs du developpement en afrique.*.