Perhaps you should try some spelling variations:
forquality control » byquality control, fertility control, quality controls
22quality control » byquality control, quality controls, qualify control
qouality control » quality controls, qualify control, quality contral
_quality control » byquality control, quality controls, qualify control
2.4 reliability » 2.6 reliability, 5.4 reliability, 2.2 reliability
5 reliability » 2 reliability
2c safety » 22 safety, 23 safety, 25 safety
2 safety » _ safety, a 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: %((22quality control) OR (((((forquality control) OR (qouality control))) OR (((_quality control) OR (quality control))))))%((2.4 reliability) OR (((5 reliability) OR (3 reliability))))%((2c safety) OR (2 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (((((forquality control) or (qouality control))) or (((_quality control) or (quality control))))))%((2.4 reliability) or (((5 reliability) or (3 reliability))))%((2c safety) OR (2 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((((forquality control) or (qouality control))) or (((_quality control) or (quality control))))))%((2.4 reliability) or (((5 reliability) or (3 reliability))))%((2c safety) OR (2 safety)) and risk%22*.