Perhaps you should try some spelling variations:
remote communication » remote communities, secure communication, time communication
technologies based » technologies used, technology based, technologies a
formation context » formation contents, formation contenu, information content
based formation » based information, based deformation, based formative
context site » context since, context white, context some
4 developing » 3 developing
developing 1 » developing _, developing a, developing e
site remote » note remote, six remote, using remote
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: technologies based formation context site remote communication costs 4 developing 1 africa.*.