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