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

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