Perhaps you should try some spelling variations:
22quality control » forquality control, quality controls, qouality control
byquality control » forquality control, quality controls, qouality control
_quality control » quality controls, qouality control, qualify control
ic reliability » 2 reliability, 7 reliability, 8 reliability
2c safety » 2 safety, 25 safety, 21 safety
23 safety » 3 safety, 2 safety, 13 safety
22 safety » 2 safety, 12 safety, 5 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: %((22quality control) OR (((((byquality control) OR (_quality control))) OR (quality control))))%((ic reliability) OR (((5 reliability) OR (3 reliability))))%((((2c safety) OR (23 safety))) OR (((22 safety) OR (_ safety)))) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22quality control) or (((((byquality control) or (_quality control))) or (quality control))))%((ic reliability) or (((5 reliability) or (3 reliability))))%((((2c safety) OR (23 safety))) or (((22 safety) or (_ safety)))) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((22quality control) or (((((byquality control) or (_quality control))) or (quality control))))%((ic reliability) or (((5 reliability) or (3 reliability))))%((((2c safety) OR (23 safety))) or (((22 safety) or (_ safety)))) and risk%22*.