Perhaps you should try some spelling variations:
communication 2.3.3 » communication 3.3, communication 2.4, communication 3.2
technologies about » technologies art, technologies bit, technologies box
about information » account information, labor information, about inflation
de communication » mobile communication, online communication
information age » information storage, information access, information about
4 developing » 3 developing
developing e » developing _, developing a, developing east
e africa » em africa, de africa, eu africa
age 3.1 » age 3.10, age 4.1, age 2.1
2.3.3 4 » 2.3.3 _, 2.3.3 a, 2.3.3 ai
3.1 de » 3.1 die, 3.1 der, 3.1 def

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

• Adding a wildcard symbol may retrieve word variants: technologies about information age 3.1 de communication 2.3.3 4 developing e africa.*.