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

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 series.") or ("Routledge telecommunication system."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("routledge communication series.") OR ("Routledge telecommunication system."))*.
• Removing quotes may allow a broader search: (( routledge communication series. ) or ( Routledge telecommunication system. ))*.