Perhaps you should try some spelling variations:
byquality control » quality control, forquality control, quality controls
_quality control » quality control, quality controls, qouality control
2.4 reliability » 2.6 reliability, 5.4 reliability, 2.2 reliability
ic reliability » 2 reliability, 5 reliability, 9 reliability
22 safety » 2 safety, 12 safety, _ safety
3 safety » _ safety, a safety, 5 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 (byquality control))%((2.4 reliability) OR (ic reliability))%((22 safety) OR (3 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((_quality control) or (byquality control))%((2.4 reliability) or (ic reliability))%((22 safety) or (3 safety)) and risk%22*.