Perhaps you should try some spelling variations:
hazard communication » towards communication, based communication, brand communication
information content » information contents, information centers, information centre
communication 23.5 » communication 23.3, communication 24.5, communication 2.3.3
technologies 4 » technologies _
4 information » 2 information, 1 information
content 3.2.1 » content 3.3.1, context 3.2.1, constant 3.2.1
3.2.1 hazard » 7.2.1 hazard, 10.2.1 hazard, 5.2.1 hazards
3 developing » 3 development
23.5 3 » 23.5 _

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information content 3.2.1 hazard communication 23.5 3 developing _ afrique.*.