Perhaps you should try some spelling variations:
22quality control » byquality control, forquality control, quality controls
_quality control » byquality control, quality controls, qouality control
10 reliability » 3 reliability, 5 reliability, 4 reliability
2 reliability » 3 reliability, 5 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 (quality control))) OR (_quality control))%((10 reliability) OR (2 reliability))%a 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))%((10 reliability) or (2 reliability))%a safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((((22quality control) OR (quality control))) or (_quality control))%((10 reliability) or (2 reliability))%a safety and risk%22*.