Perhaps you should try some spelling variations:
"artech house mobile communication services." » "artech house mobile telecommunications services.", "artech use mobile communication services.", "artech case mobile communication services.", "artech house babble communication services."
"artech more mobile communication series." » "artech more mobile communication systems.", "artech more mobile communication skills.", "artech more mobile communication strategies."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("artech house mobile communication services.") OR ("artech more mobile communication series."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"artech house mobile communication services.\") OR (\"artech more mobile communication series.\"))".
• Removing quotes may allow a broader search: (( artech house mobile communication services. ) OR ( artech more mobile communication series. )).
• Adding a wildcard symbol may retrieve word variants: (("artech house mobile communication services.") OR ("artech more mobile communication series."))*.