Perhaps you should try some spelling variations:
forquality control » _quality control, byquality control, qouality control
20 reliability » 2 reliability, 10 reliability, 24 reliability
5 reliability » 3 reliability
22 safety » 12 safety, 5 safety, 4 safety
2 safety » 5 safety, 4 safety, 3 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 control) OR (forquality control))%((20 reliability) OR (5 reliability))%((22 safety) OR (2 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((quality control) or (forquality control))%((20 reliability) or (5 reliability))%((22 safety) OR (2 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((quality control) or (forquality control))%((20 reliability) or (5 reliability))%((22 safety) OR (2 safety)) and risk%22*.