Perhaps you should try some spelling variations:
machine communications » chile communications, china communications, vaccine communication
communications 3.3 » communication 3.3, communications 3.4, communications 4.3
information ch4 » information can, information c, information china
3.4.1 machine » 3.3.1 machine, 3.6.1 machine, 13.2.1 machine
ch4 3.4.1 » ch4 3.6.1
1 afrique » l afrique, en afrique, 1 enrique
3.3 a » 3.3 _, 2.3 a, 4.3 a

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information ch4 3.4.1 machine communications 3.3 a development 1 afrique.*.