Perhaps you should try some spelling variations:
byquality control » forquality control, quality controls, qouality control
_quality control » quality controls, qouality control, qualify control
20 reliability » 10 reliability, 24 reliability, 29 reliability
21 reliability » 1 reliability, 11 reliability, 24 reliability
ic reliability » 5 reliability, 7 reliability, 8 reliability
2 reliability » 3 reliability, 5 reliability
9 reliability » 3 reliability, 5 reliability, 4 reliability
23 safety » 3 safety, 2 safety, 13 safety

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 (_quality control))%((((20 reliability) OR (((21 reliability) OR (2 reliability))))) OR (((ic reliability) OR (9 reliability))))%23 safety AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((byquality control) OR (quality control))) or (_quality control))%((((20 reliability) or (((21 reliability) or (2 reliability))))) or (((ic reliability) or (9 reliability))))%23 safety and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((((byquality control) OR (quality control))) or (_quality control))%((((20 reliability) or (((21 reliability) or (2 reliability))))) or (((ic reliability) or (9 reliability))))%23 safety and risk%22*.