Perhaps you should try some spelling variations:
class communication » mass communication, plans communication, crisis communication
information age » information storage, information access, information about
communication 4 » communication _, communication a, communication 3
developing east » development east, developing a, developing asia
technologies 4 » technologies _
4 information » 2 information, 1 information
east afrique » east africa, east african, en afrique
4.2.1 class » 4.4.1 class, 5.2.1 class, 4.2.1 case
age 4.2.1 » age 4.2.6, age 5.2.1, age 4.2.3.1

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information age 4.2.1 class communication 4 _ developing east afrique.*.