Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
byquality control » quality control, _quality control, forquality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
2 reliability » 3 reliability
8 reliability » 3 reliability, 4 reliability, 7 reliability
5 reliability » 3 reliability
2c safety » 2 safety, 22 safety, 21 safety
23 safety » 2 safety, 13 safety, 22 safety
25 safety » 2 safety, 15 safety, 22 safety
3 safety » 4 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) OR (byquality control))%((((2c reliability) OR (2 reliability))) OR (((8 reliability) OR (5 reliability))))%((((2c safety) OR (((23 safety) OR (3 safety))))) OR (((25 safety) OR (5 safety)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (byquality control))%((((2c reliability) or (2 reliability))) or (((8 reliability) or (5 reliability))))%((((2c safety) or (((23 safety) OR (3 safety))))) or (((25 safety) or (5 safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (byquality control))%((((2c reliability) or (2 reliability))) or (((8 reliability) or (5 reliability))))%((((2c safety) or (((23 safety) OR (3 safety))))) or (((25 safety) or (5 safety)))) and risk%22*.