Perhaps you should try some spelling variations:
"turing machines using vibration signals" » "using machine using vibration signals", "milling machines using vibration signals", "turing machines using vibration signal"
"rotating machinery using vibration signals" » "coating machinery using vibration signals", "relating machinery using vibration signals", "rotation machinery using vibration signals", "rotating machinery using vibration signal"

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: (("rotating machinery using vibration signals") or ("turing machines using vibration signals"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("rotating machinery using vibration signals") OR ("turing machines using vibration signals")).
• Removing quotes may allow a broader search: (( rotating machinery using vibration signals ) or ( turing machines using vibration signals )).
• Adding a wildcard symbol may retrieve word variants: (("rotating machinery using vibration signals") or ("turing machines using vibration signals"))*.