Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, forquality control
byquality control » quality control, _quality control, forquality control
quality controls » quality control, qualite controle, quality concepts
2c reliability » 2 reliability, 20 reliability, 24 reliability
5 reliability » 3 reliability
2c safety » 2 safety, 23 safety, 25 safety
22 safety » 2 safety, 12 safety, 5 safety

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) OR (quality controls))))%((2c reliability) OR (5 reliability))%((2c safety) OR (22 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((byquality control) or (quality controls))))%((2c reliability) or (5 reliability))%((2c safety) or (22 safety)) and risk%22*.