Perhaps you should try some spelling variations:
routledge telecommunication » mobile telecommunication, contents telecommunication
"Routledge telecommunication systems." » "Routledge communication systems.", "Routledge telecommunication services."
"routledge communication services." » "routledge telecommunications services."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("Routledge telecommunication systems.") or ("routledge communication services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("Routledge telecommunication systems.") OR ("routledge communication services.")).
• Removing quotes may allow a broader search: (( Routledge telecommunication systems. ) or ( routledge communication services. )).
• Adding a wildcard symbol may retrieve word variants: (("Routledge telecommunication systems.") or ("routledge communication services."))*.