Perhaps you should try some spelling variations:
byquality control » forquality control, quality controls, qouality control
_quality control » quality controls, qouality control, qualify control
11 reliability » 1 reliability, 3 reliability, 5 reliability
2 reliability » 3 reliability, 5 reliability

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: %((((_quality control) OR (byquality control))) OR (quality control))%((11 reliability) OR (2 reliability))%_ safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((((_quality control) or (byquality control))) or (quality control))%((11 reliability) or (2 reliability))%_ safety and risk%22*.