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 » 20 reliability, 24 reliability, 29 reliability
2 reliability » 3 reliability, 5 reliability
9 reliability » 3 reliability, 5 reliability, 4 reliability
22 safety » 2 safety, 12 safety, 5 safety
2a safety » 2 safety, 23 safety, 21 safety
25 safety » 5 safety, 2 safety, 15 safety
a 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 (9 reliability))%((22 safety) OR (((((2a safety) OR (25 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 (9 reliability))%((22 safety) or (((((2a safety) OR (25 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 (9 reliability))%((22 safety) or (((((2a safety) OR (25 safety))) or (a safety)))) and risk%22*.