Perhaps you should try some spelling variations:
_quality control » byquality control, quality controls, quality contol
qouality control » quality controls, forquality control, byquality control
qualify control » quality controls, quality contol, byquality control
quality contral » quality controls, equality central, quality contract
29 reliability » 2 reliability, 9 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 (((((_quality control) OR (qualify control))) OR (((qouality control) OR (quality contral))))))%29 reliability%2c safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((quality control) or (((((_quality control) or (qualify control))) or (((qouality control) OR (quality contral))))))%29 reliability%2c safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((quality control) or (((((_quality control) or (qualify control))) or (((qouality control) OR (quality contral))))))%29 reliability%2c safety and risk%22*.