Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
byquality control » quality control, _quality control, forquality control
20 reliability » 2 reliability, 10 reliability, 24 reliability
9 reliability » 3 reliability, 2 reliability, 5 reliability
2c safety » 22 safety, 25 safety, 21 safety
23 safety » 3 safety, 13 safety, 22 safety
2 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: %((22quality control) OR (byquality control))%((20 reliability) OR (9 reliability))%((2c safety) OR (((23 safety) OR (2 safety)))) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (byquality control))%((20 reliability) or (9 reliability))%((2c safety) or (((23 safety) or (2 safety)))) and risk%22*.