Perhaps you should try some spelling variations:
"1975 string offensive" » "1975 spring offensive", "1975 steering offensive", "1975 striking offensive", "1975 string defensive", "1975 string ostensive"
"1975 string offense" » "1975 spring offense", "1975 steering offense", "1975 striking offense"
"1975 strings offences" » "1975 springs offences", "1975 steerings offences", "1975 strikings offences", "1975 settings offences", "1975 strings offence", "1975 strings offenders"

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: (("1975 string offensive") OR ((("1975 string offense") OR ("1975 strings offences"))))~.
• Removing quotes may allow a broader search: (( 1975 string offensive ) or ((( 1975 string offense ) or ( 1975 strings offences ))))~.
• Adding a wildcard symbol may retrieve word variants: (("1975 string offensive") or ((("1975 string offense") or ("1975 strings offences"))))*.