Perhaps you should try some spelling variations:
_quality control » quality control, byquality control, quality controls
5 reliability » 3 reliability
8 reliability » 3 reliability, 2 reliability, 7 reliability
25 safety » 5 safety, 2 safety, 15 safety
23 safety » 2 safety, 13 safety, 5 safety
22 safety » 2 safety, 12 safety, 5 safety
3 safety » 5 safety, 4 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: %_quality control%((5 reliability) OR (8 reliability))%((((25 safety) OR (((23 safety) OR (22 safety))))) OR (3 safety)) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %_quality control%((5 reliability) or (8 reliability))%((((25 safety) or (((23 safety) or (22 safety))))) or (3 safety)) and risk%22*.