Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
byquality control » quality control, _quality control, forquality control
2c reliability » 24 reliability, 20 reliability, 21 reliability
ic reliability » 5 reliability, 9 reliability, 8 reliability
2 reliability » 3 reliability, 5 reliability
22 safety » 2 safety, 12 safety, _ safety
2a safety » 2 safety, 23 safety, 25 safety
a safety » _ safety, a safe

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))%((((2c reliability) OR (2 reliability))) OR (ic reliability))%((22 safety) OR (((2a safety) OR (a safety)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) OR (byquality control))%((((2c reliability) or (2 reliability))) or (ic reliability))%((22 safety) or (((2a safety) or (a safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) OR (byquality control))%((((2c reliability) or (2 reliability))) or (ic reliability))%((22 safety) or (((2a safety) or (a safety)))) and risk%22*.