Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, quality controls
24 reliability » 2.4 reliability, 4 reliability, 14 reliability
2 reliability » 5 reliability
3 reliability » 5 reliability
25 safety » 5 safety, 2 safety, 15 safety
23 safety » 2 safety, 13 safety, 22 safety
3 safety » 5 safety, 4 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: %_quality control%((24 reliability) OR (((2 reliability) OR (3 reliability))))%((((25 safety) OR (23 safety))) OR (3 safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%_quality control%((24 reliability) or (((2 reliability) OR (3 reliability))))%((((25 safety) or (23 safety))) or (3 safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %_quality control%((24 reliability) or (((2 reliability) OR (3 reliability))))%((((25 safety) or (23 safety))) or (3 safety)) and risk%22*.