Perhaps you should try some spelling variations:
forquality control » quality control, byquality control, qouality control
22quality control » quality control, byquality control, quality controls
_quality control » quality control, byquality control, quality controls
29 reliability » 2 reliability, 9 reliability, 20 reliability
24 reliability » 2.4 reliability, 2 reliability, 4 reliability
a safety » a safe

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 (forquality control))) OR (_quality control))%((29 reliability) OR (24 reliability))%a safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((22quality control) OR (forquality control))) or (_quality control))%((29 reliability) or (24 reliability))%a safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((((22quality control) OR (forquality control))) or (_quality control))%((29 reliability) or (24 reliability))%a safety and risk%22*.