Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
based communications » based communication, speed communications, aided communications
more information » price information, trade information
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
technology more » technology moral, technology make, technology mara
information 2 » information 3
diode based » code based, drone based, mode based
costs au » costs a, costs amy, costs _
2 diode » _ diode, a diode, 2 divide

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

• Adding a wildcard symbol may retrieve word variants: technology more information 2 diode based communications costs au developpement en afrique.*.