Perhaps you should try some spelling variations:
forquality control » byquality control, qouality control, fertility control
_quality control » byquality control, quality controls, qouality control
2c reliability » 20 reliability, 24 reliability, 29 reliability
5 reliability » 3 reliability
2 reliability » 3 reliability
4 safety » 5 safety
a safety » a safe

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: %((forquality control) OR (((_quality control) OR (quality control))))%((2c reliability) OR (((5 reliability) OR (2 reliability))))%((4 safety) OR (a safety)) AND risk%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((forquality control) or (((_quality control) or (quality control))))%((2c reliability) or (((5 reliability) or (2 reliability))))%((4 safety) OR (a safety)) and risk%22".
• Adding a wildcard symbol may retrieve word variants: %((forquality control) or (((_quality control) or (quality control))))%((2c reliability) or (((5 reliability) or (2 reliability))))%((4 safety) OR (a safety)) and risk%22*.