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