Perhaps you should try some spelling variations:
forquality control » byquality control, fertility control, qualify control
22quality control » byquality control, qualify control, quality contol
quality controls » qualite controle, quality concepts
qouality control » qualify control, quality contral, byquality control
_quality control » byquality control, qualify control, quality contol
2.4 reliability » 2.6 reliability, 5.4 reliability, 2.2 reliability
5 reliability » 3 reliability, 2 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: %((((22quality control) OR (quality controls))) OR (((((forquality control) OR (qouality control))) OR (((_quality control) OR (quality control))))))%((2.4 reliability) OR (5 reliability))%2c safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((22quality control) OR (quality controls))) or (((((forquality control) or (qouality control))) or (((_quality control) or (quality control))))))%((2.4 reliability) or (5 reliability))%2c safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((((22quality control) OR (quality controls))) or (((((forquality control) or (qouality control))) or (((_quality control) or (quality control))))))%((2.4 reliability) or (5 reliability))%2c safety and risk%22*.