Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 24 reliability, ic reliability, 20 reliability
2 reliability » 3 reliability
5 reliability » 3 reliability
25 safety » 15 safety, 22 safety, 4 safety
23 safety » 3 safety, 13 safety, 22 safety
2 safety » 4 safety, 3 safety
a safety » a safe

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 (5 reliability))%((((25 safety) OR (5 safety))) OR (((23 safety) OR (((2 safety) OR (((a safety) OR (_ 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))%((((25 safety) or (5 safety))) or (((23 safety) or (((2 safety) or (((a safety) OR (_ safety)))))))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((2c reliability) or (2 reliability))) or (5 reliability))%((((25 safety) or (5 safety))) or (((23 safety) or (((2 safety) or (((a safety) OR (_ safety)))))))) and risk%22*.