Perhaps you should try some spelling variations:
"wirtinger prize" » "wirtinger price", "wirtinger prime"
"harting prize" » "harting price", "harting prime", "charting prize", "hartling prize", "parting prize"
"landing prize" » "landing price", "landing prime", "standing prize", "branding prize"

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: (("wirtinger prize") OR ((("harting prize") OR ("landing prize")))).
• Removing quotes may allow a broader search: (( wirtinger prize ) or ((( harting prize ) or ( landing prize )))).
• Adding a wildcard symbol may retrieve word variants: (("wirtinger prize") or ((("harting prize") or ("landing prize"))))*.