Perhaps you should try some spelling variations:
"routledge telecommunications services." » "mobile telecommunications services.", "rural telecommunications services.", "mobile telecommunication services.", "routledge telecommunications series."
"routledge telecommunication system." » "mobile telecommunication system.", "routledge telecommunication systems.", "routledge telecommunication sector.", "routledge telecommunications sector."

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: (("routledge telecommunications services.") OR ("routledge telecommunication system."))~.
• Removing quotes may allow a broader search: (( routledge telecommunications services. ) or ( routledge telecommunication system. ))~.
• Adding a wildcard symbol may retrieve word variants: (("routledge telecommunications services.") or ("routledge telecommunication system."))*.