Perhaps you should try some spelling variations:
"vehicle-based real-time pi measured system" » "vehicle-based real-time pi measure system", "vehicle-based real-time pi unmeasured system", "vehicle-based real-time pi measures systems", "vehicle-based real-time via measured system", "vehicle-based real-time a measured system", "vehicle-based real-time pid measured system", "vehicle-based real-time pie measured system", "vehicle-based real-time p measured system"
"vehicle-based real-time _ measured system" » "vehicle-based real-time _ measure system", "vehicle-based real-time _ unmeasured system", "vehicle-based real-time _ measures systems"
"vehicle-based real-time _ measures system" » "vehicle-based real-time _ measures systems", "vehicle-based real-time _ measure system", "vehicle-based real-time _ measures systemic"

Try widening your search to All Fields.

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: (("vehicle-based real-time pi measured system") OR ((("vehicle-based real-time _ measured system") OR ("vehicle-based real-time _ measures system")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"vehicle-based real-time pi measured system\") or (((\"vehicle-based real-time _ measured system\") OR (\"vehicle-based real-time _ measures system\"))))".
• Removing quotes may allow a broader search: (( vehicle-based real-time pi measured system ) or ((( vehicle-based real-time _ measured system ) OR ( vehicle-based real-time _ measures system )))).
• Adding a wildcard symbol may retrieve word variants: (("vehicle-based real-time pi measured system") or ((("vehicle-based real-time _ measured system") OR ("vehicle-based real-time _ measures system"))))*.