Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.1 communications » 4.1 communication, 3.1 communications, 4.1 communicating
more information » price information, trade information
developpement en » developpement et, developpement des, developpement de
technology more » technology moral, technology make, technology mara
information war » information what, information wants, information when
4 developpement » de developpement, le developpement, et developpement
war case » dar case, war cash, war causes
case 4.1 » case 4.2, case 1
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 more information war case 4.1 communications costs 4 developpement en afrique.*.