Perhaps you should try some spelling variations:
22quality control » quality control, forquality control, qouality control
byquality control » quality control, forquality control, qouality control
_quality control » quality control, qouality control, qualify control
quality controls » quality control, qualite controle, quality concepts
9 reliability » 3 reliability, 5 reliability, 4 reliability
2 reliability » 3 reliability, 5 reliability
23 safety » 3 safety, 2 safety, 13 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: %((22quality control) OR (((((_quality control) OR (byquality control))) OR (quality controls))))%((2((9 reliability) OR (2 reliability))) OR (((9 reliability) OR (2 reliability))))%23 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (((((_quality control) or (byquality control))) or (quality controls))))%((2((9 reliability) OR (2 reliability))) or (((9 reliability) OR (2 reliability))))%23 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((((_quality control) or (byquality control))) or (quality controls))))%((2((9 reliability) OR (2 reliability))) or (((9 reliability) OR (2 reliability))))%23 safety and risk%22*.