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

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