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

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