Perhaps you should try some spelling variations:
22quality control » _quality control, byquality control, forquality control
qouality control » _quality control, qualify control, quality contral
quality controls » qualite controle, quality concepts
9 reliability » 3 reliability, 5 reliability, 2 reliability
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: %((22quality control) OR (((((qouality control) OR (quality control))) OR (quality controls))))%9 reliability%2 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (((((qouality control) OR (quality control))) or (quality controls))))%9 reliability%2 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((((qouality control) OR (quality control))) or (quality controls))))%9 reliability%2 safety and risk%22*.