Perhaps you should try some spelling variations:
_quality control » byquality control, quality controls, qualify control
qouality control » quality controls, qualify control, quality contral
29 reliability » 9 reliability, 20 reliability, 24 reliability
2 reliability » 3 reliability, 5 reliability
2 safety » 5 safety, 4 safety, 3 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 (((_quality control) OR (qouality control))))%((29 reliability) OR (2 reliability))%2 safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((quality control) or (((_quality control) or (qouality control))))%((29 reliability) or (2 reliability))%2 safety and risk%22*.