Perhaps you should try some spelling variations:
22quality control » byquality control, forquality control, quality controls
_quality control » byquality control, quality controls, qouality control
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
ic reliability » 2 reliability, 5 reliability, 9 reliability
22 safety » 2 safety, 12 safety, _ safety
23 safety » 3 safety, 2 safety, 13 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: %((22quality control) OR (((_quality control) OR (quality control))))%((24 reliability) OR (ic reliability))%((22 safety) OR (23 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((_quality control) or (quality control))))%((24 reliability) or (ic reliability))%((22 safety) or (23 safety)) and risk%22*.