Perhaps you should try some spelling variations:
quality controls » qualite controle, quality concepts
2 reliability » 3 reliability, 5 reliability
9 reliability » 3 reliability, 5 reliability, 4 reliability
2c safety » 2 safety, 22 safety, 23 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: %((quality controls) OR (quality control))%((2 reliability) OR (9 reliability))%((2c safety) OR (((5 safety) OR (_ safety)))) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((quality controls) or (quality control))%((2 reliability) or (9 reliability))%((2c safety) or (((5 safety) or (_ safety)))) and risk%22*.