Perhaps you should try some spelling variations:
forquality control » byquality control, qouality control, fertility control
22quality control » byquality control, quality controls, qouality control
_quality control » byquality control, quality controls, qouality control
2.4 reliability » 2.6 reliability, 5.4 reliability, 2.2 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
23 safety » 3 safety, 2 safety, 13 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 (((_quality control) OR (quality control))))))%((2.4 reliability) OR (((5 reliability) OR (2 reliability))))%23 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (((forquality control) or (((_quality control) OR (quality control))))))%((2.4 reliability) or (((5 reliability) or (2 reliability))))%23 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((forquality control) or (((_quality control) OR (quality control))))))%((2.4 reliability) or (((5 reliability) or (2 reliability))))%23 safety and risk%22*.