Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
na developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
des information » des informations, does information, dis information
information war » information what, information wants, information when
technology des » technology does, technology debts, technology nodes
barriers na » barriers a, barriers aa, barriers law
war range » a range, war race
range 3.5 » range 3.7, change 3.5, range 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology des information war range 3.5 communication barriers na developpement en afrique.*.