Perhaps you should try some spelling variations:
communication 3.3 » communication _, communication a, communication 1
de communication » mobile communication, online communication
developing east » development east, developing a, developing asia
contents 3.1 » contents 1, contents _, contents map
f developing » 3 developing, 4 developing, 2 developing
east africa » west africa
3.1 de » 3.1 die, 3.1 der, 3.1 def
3.3 f » 3.3 _, 3.3 a, 3.3 e

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

• Adding a wildcard symbol may retrieve word variants: technological _ information contents 3.1 de communication 3.3 f developing east africa.*.