Perhaps you should try some spelling variations:
forquality control » _quality control, byquality control, qouality control
quality controls » qualite controle, quality concepts
20 reliability » 10 reliability, 24 reliability, 29 reliability
2 reliability » 3 reliability, 5 reliability
23 safety » 3 safety, 2 safety, 22 safety
13 safety » 3 safety, 10 safety, 11 safety

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 (((forquality control) OR (quality control))))%((20 reliability) OR (2 reliability))%((23 safety) OR (13 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((quality controls) or (((forquality control) or (quality control))))%((20 reliability) or (2 reliability))%((23 safety) OR (13 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((quality controls) or (((forquality control) or (quality control))))%((20 reliability) or (2 reliability))%((23 safety) OR (13 safety)) and risk%22*.