Perhaps you should try some spelling variations:
byquality control » quality control, forquality control, quality controls
_quality control » quality control, quality controls, qualify control
qouality control » quality control, quality controls, qualify control
20 reliability » 2 reliability, 10 reliability, 24 reliability
5 reliability » 3 reliability
4 safety » 5 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: %((byquality control) OR (((_quality control) OR (qouality control))))%((20 reliability) OR (5 reliability))%4 safety AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %((byquality control) or (((_quality control) or (qouality control))))%((20 reliability) or (5 reliability))%4 safety and risk%22*.