Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 20 reliability, 24 reliability, ic reliability
25 safety » 5 safety, 15 safety, 22 safety
3 safety » 5 safety, 4 safety
2 safety » 5 safety, 4 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 (3 reliability))))) OR (5 reliability))%((25 safety) OR (((3 safety) OR (((2 safety) OR (a 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 (5 reliability))%((25 safety) or (((3 safety) or (((2 safety) or (a safety)))))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %22quality control%((((2c reliability) or (((2 reliability) OR (3 reliability))))) or (5 reliability))%((25 safety) or (((3 safety) or (((2 safety) or (a safety)))))) and risk%22*.