Perhaps you should try some spelling variations:
routledge telecommunication » mobile telecommunication
telecommunication sector » telecommunications sector, telecommunications network, telecommunications reform
online communications » online communication, mobile communications, online communities
communications costs » communication costs, communication systems, communication efforts

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( online communications costs. ) OR ( routledge telecommunication sector. ))~.
• Adding a wildcard symbol may retrieve word variants: (( online communications costs. ) or ( routledge telecommunication sector. ))*.