Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
users information » user information, museums information, series information
trade development » software development
technology users » technology use, technology series, technology transfers
10 communication » 1 communication, de communication, 3 communication
information war » information what, information wants, information when
development de » development d, development ds, developpement de
costly trade » costs trade, country trade, costly than
de afrique » de l'afrique, en afrique, l afrique
war space » air space, war peace, war race
space 10 » space 1, space 16, space 10.3

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

• Adding a wildcard symbol may retrieve word variants: technology users information war space 10 communication costly trade development de afrique.*.