Perhaps you should try some spelling variations:
ic reliability » 5 reliability, 7 reliability, 8 reliability
2 reliability » 3 reliability, 5 reliability
2c safety » 22 safety, 23 safety, 25 safety
11 safety » 10 safety, 5 safety, 4 safety
2 safety » 5 safety, 4 safety, 3 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%((2 reliability) OR (ic reliability))%((((2c safety) OR (2 safety))) OR (((11 safety) OR (_ safety)))) AND risk%22.
• Adding a wildcard symbol may retrieve word variants: %quality control%((2 reliability) or (ic reliability))%((((2c safety) or (2 safety))) or (((11 safety) or (_ safety)))) and risk%22*.