Perhaps you should try some spelling variations:
_quality control » byquality control, quality controls, qouality control
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
ic reliability » 3 reliability, 5 reliability, 2 reliability
22 safety » 2 safety, 12 safety, 5 safety
3 safety » 5 safety, 4 safety

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: %((_quality control) OR (quality control))%((24 reliability) OR (ic reliability))%((22 safety) OR (3 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((_quality control) or (quality control))%((24 reliability) or (ic reliability))%((22 safety) or (3 safety)) and risk%22*.