Perhaps you should try some spelling variations:
22quality control » _quality control, forquality control, quality controls
byquality control » _quality control, forquality control, quality controls
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
21 reliability » 2 reliability, 1 reliability, 11 reliability
ic reliability » 5 reliability, 2 reliability, 7 reliability
2c safety » 2 safety, 23 safety, 21 safety
25 safety » 5 safety, 2 safety, 15 safety
22 safety » 2 safety, 12 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 (quality control))) OR (byquality control))%((((24 reliability) OR (21 reliability))) OR (ic reliability))%((((2c safety) OR (25 safety))) OR (22 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((22quality control) OR (quality control))) or (byquality control))%((((24 reliability) or (21 reliability))) or (ic reliability))%((((2c safety) or (25 safety))) or (22 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((((22quality control) OR (quality control))) or (byquality control))%((((24 reliability) or (21 reliability))) or (ic reliability))%((((2c safety) or (25 safety))) or (22 safety)) and risk%22*.