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

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