Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
ic reliability » 5 reliability, 7 reliability, 8 reliability
2c reliability » 20 reliability, 24 reliability, 29 reliability
2 reliability » 5 reliability
3 reliability » 5 reliability
21 safety » 11 safety, 1 safety, 25 safety
22 safety » 12 safety, 5 safety, 4 safety
23 safety » 3 safety, 13 safety, 5 safety
a safety » a safe
2 safety » 5 safety, 4 safety, 3 safety

Try widening your search to All Fields.

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 (3 reliability))))) OR (ic reliability))%((((21 safety) OR (((22 safety) OR (a safety))))) OR (((23 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 (3 reliability))))) or (ic reliability))%((((21 safety) or (((22 safety) OR (a safety))))) or (((23 safety) or (2 safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((2c reliability) or (((2 reliability) or (3 reliability))))) or (ic reliability))%((((21 safety) or (((22 safety) OR (a safety))))) or (((23 safety) or (2 safety)))) and risk%22*.