Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
2 reliability » 5 reliability
8 reliability » 5 reliability, 4 reliability, 7 reliability
3 reliability » 5 reliability
22 safety » 12 safety, 5 safety, 4 safety
23 safety » 3 safety, 13 safety, 5 safety
2c safety » 25 safety, 21 safety, 28 safety
24 safety » 2.4 safety, 4 safety, 14 safety
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 (((8 reliability) OR (3 reliability))))%((((((2c safety) OR (24 safety))) OR (22 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 (((8 reliability) OR (3 reliability))))%((((((2c safety) or (24 safety))) or (22 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 (((8 reliability) OR (3 reliability))))%((((((2c safety) or (24 safety))) or (22 safety))) or (((23 safety) or (2 safety)))) and risk%22*.