Perhaps you should try some spelling variations:
"23rd ifip study" » "23rd dip study", "23rd itp study", "23rd rflp study", "22nd ifip study"
"23rd ieee study" » "23rd ieeg study", "23rd ieee std", "23rd csee study", "3rd ieee study", "2nd ieee study"
"22nd ieee study" » "22nd ieeg study", "22nd ieee std", "22nd csee study", "2nd ieee study"

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: (((("23rd ieee study") OR ("22nd ieee study"))) OR ("23rd ifip study")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"23rd ieee study\") OR (\"22nd ieee study\"))) or (\"23rd ifip study\"))".
• Removing quotes may allow a broader search: (((( 23rd ieee study ) OR ( 22nd ieee study ))) or ( 23rd ifip study )).
• Adding a wildcard symbol may retrieve word variants: (((("23rd ieee study") OR ("22nd ieee study"))) or ("23rd ifip study"))*.