Perhaps you should try some spelling variations:
byquality control » quality control, _quality control, forquality control
2c reliability » 2 reliability, 20 reliability, 24 reliability
5 reliability » 3 reliability
2 safety » 4 safety
3 safety » 4 safety

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%byquality control%((2c reliability) OR (5 reliability))%((2 safety) OR (((3 safety) OR (5 safety)))) AND risk%22".
• Adding a wildcard symbol may retrieve word variants: %byquality control%((2c reliability) OR (5 reliability))%((2 safety) OR (((3 safety) OR (5 safety)))) AND risk%22*.