Perhaps you should try some spelling variations:
forquality control » _quality control, byquality control, qouality control
22quality control » _quality control, byquality control, quality controls
20 reliability » 2 reliability, 10 reliability, 24 reliability
9 reliability » 3 reliability, 2 reliability, 5 reliability
a safety » _ safety, a safe

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: %((22quality control) OR (((forquality control) OR (quality control))))%((20 reliability) OR (9 reliability))%a safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((forquality control) or (quality control))))%((20 reliability) or (9 reliability))%a safety and risk%22*.