Perhaps you should try some spelling variations:
oral communication » personal communication
open development » clean development, driven development, human development
technologies 4 » technologies _
4 information » 2 information, 1 information
information a » information age, information about
development l » development li, development 1, development law
costs open » cost open, costs over
l afrique » en afrique
des oral » des moral, des oil, des orts
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information a des oral communication costs open development l afrique.*.