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 » 2 reliability, 24 reliability, 21 reliability
20 reliability » 2 reliability, 10 reliability, 24 reliability
ic reliability » 2 reliability, 5 reliability, 9 reliability
22 safety » 12 safety, _ safety, a safety
2 safety » _ safety, a safety, 5 safety

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 (20 reliability))) OR (((ic reliability) OR (3 reliability))))%((2 safety) OR (22 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 (20 reliability))) or (((ic reliability) or (3 reliability))))%((2 safety) or (22 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (byquality control))%((((2c reliability) OR (20 reliability))) or (((ic reliability) or (3 reliability))))%((2 safety) or (22 safety)) and risk%22*.