Perhaps you should try some spelling variations:
byquality control » quality control, _quality control, forquality control
quality controls » quality control, qualite controle, quality concepts
5 reliability » 3 reliability, 2 reliability
23 safety » 2 safety, 13 safety, 22 safety
3 safety » _ safety, a safety, 5 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) OR (quality controls))%5 reliability%((23 safety) OR (3 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((byquality control) or (quality controls))%5 reliability%((23 safety) or (3 safety)) and risk%22*.