Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 20 reliability, 24 reliability, 21 reliability
ic reliability » 7 reliability, 8 reliability, 11 reliability
2 reliability » 3 reliability
5 reliability » 3 reliability
9 reliability » 3 reliability, 4 reliability
24 safety » 2.4 safety, 4 safety, 14 safety
23 safety » 3 safety, 13 safety, 5 safety
22 safety » 12 safety, 5 safety, 4 safety
2 safety » 5 safety, 4 safety, 3 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%((((2c reliability) OR (((2 reliability) OR (5 reliability))))) OR (((ic reliability) OR (9 reliability))))%((((24 safety) OR (23 safety))) OR (((22 safety) OR (2 safety)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((((2c reliability) or (((2 reliability) OR (5 reliability))))) or (((ic reliability) or (9 reliability))))%((((24 safety) or (23 safety))) or (((22 safety) or (2 safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((2c reliability) or (((2 reliability) OR (5 reliability))))) or (((ic reliability) or (9 reliability))))%((((24 safety) or (23 safety))) or (((22 safety) or (2 safety)))) and risk%22*.