Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
byquality control » quality control, _quality control, forquality control
10 reliability » 3 reliability, 4 reliability, 9 reliability
ic reliability » 9 reliability, 8 reliability, 11 reliability
2 reliability » 3 reliability
5 reliability » 3 reliability
22 safety » 12 safety, _ safety, 5 safety
2a safety » 23 safety, 25 safety, 21 safety
2 safety » _ safety, 5 safety, 4 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))%((((10 reliability) OR (2 reliability))) OR (((ic reliability) OR (5 reliability))))%((((22 safety) OR (2 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))%((((10 reliability) or (2 reliability))) or (((ic reliability) OR (5 reliability))))%((((22 safety) or (2 safety))) or (((2a safety) or (a safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (byquality control))%((((10 reliability) or (2 reliability))) or (((ic reliability) OR (5 reliability))))%((((22 safety) or (2 safety))) or (((2a safety) or (a safety)))) and risk%22*.