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