Perhaps you should try some spelling variations:
"closed-onmachine scheduling" » "closed-machine scheduling", "closed-machines scheduling", "closed-maschine scheduling"
"closed-line scheduling" » "closed-online scheduling", "closed-time scheduling", "closed-machine scheduling"

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: (("closed-line scheduling") OR ("closed-onmachine scheduling")).
• Removing quotes may allow a broader search: (( closed-line scheduling ) or ( closed-onmachine scheduling )).
• Adding a wildcard symbol may retrieve word variants: (("closed-line scheduling") or ("closed-onmachine scheduling"))*.