Perhaps you should try some spelling variations:
byquality control » _quality control, forquality control, quality controls
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
ic reliability » 3 reliability, 5 reliability, 2 reliability
12 safety » 2 safety, 10 safety, 11 safety
a 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: %((quality control) OR (byquality control))%((24 reliability) OR (ic reliability))%((12 safety) OR (a safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((quality control) or (byquality control))%((24 reliability) or (ic reliability))%((12 safety) or (a safety)) and risk%22*.