Perhaps you should try some spelling variations:
22quality control » byquality control, forquality control, qouality control
_quality control » byquality control, qouality control, qualify control
quality controls » qualite controle, quality concepts
9 reliability » 3 reliability, 5 reliability, 4 reliability
2 reliability » 3 reliability, 5 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: %((((22quality control) OR (quality control))) OR (((_quality control) OR (quality controls))))%((9 reliability) OR (2 reliability))%2c safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((22quality control) or (quality control))) or (((_quality control) or (quality controls))))%((9 reliability) OR (2 reliability))%2c safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((((22quality control) or (quality control))) or (((_quality control) or (quality controls))))%((9 reliability) OR (2 reliability))%2c safety and risk%22*.