Perhaps you should try some spelling variations:
_quality control » quality control, quality controls, qualify control
qouality control » quality control, quality controls, qualify control
2c reliability » 2 reliability, ic reliability, 20 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: %((_quality control) OR (qouality control))%2c reliability%2c safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((_quality control) or (qouality control))%2c reliability%2c safety and risk%22*.