Perhaps you should try some spelling variations:
22quality control » quality control, _quality control, byquality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
ic reliability » 7 reliability, 8 reliability, 11 reliability
2 reliability » 3 reliability
5 reliability » 3 reliability
2c safety » 2 safety, 22 safety, 23 safety
10 safety » 4 safety, 3 safety, 2 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%((2c reliability) OR (((ic reliability) OR (((2 reliability) OR (5 reliability))))))%((2c safety) OR (((10 safety) OR (5 safety)))) AND risk%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22quality control%((2c reliability) or (((ic reliability) or (((2 reliability) OR (5 reliability))))))%((2c safety) or (((10 safety) or (5 safety)))) and risk%22*".