Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
communication 2.3.3 » communication 3.3, communication 2.4, communication 3.2
information age » information storage, information access, information about
14.7 downward » 2.5 downward, 5.4 downward
3 developing » 3 development
developing a » developing _
age 14.7 » age 4.1, age 1.2, age 1400
a africa » 1 africa, can africa, em africa
2.3.3 3 » 2.3.3 _, 2.3.3 a, 2.3.3 ai

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information age 14.7 downward communication 2.3.3 3 developing a africa.*.