Perhaps you should try some spelling variations:
"1975 string offensive" » "1975 strings offensive", "1975 spring offensive", "1975 steering offensive", "1975 string defensive", "1975 string offense"
"1975 stringer offensive" » "1975 stringser offensive", "1975 springer offensive", "1975 steeringer offensive", "1975 stringer defensive", "1975 stringer offense", "1975 stronger offensive", "1975 stranger offensive"
"1975 stringer ostensive" » "1975 stringser ostensive", "1975 springer ostensive", "1975 steeringer ostensive", "1975 stronger ostensive", "1975 stranger ostensive", "1975 stringer extensive", "1975 stringer intensive"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("1975 string offensive") or ((("1975 stringer offensive") or ("1975 stringer ostensive"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("1975 string offensive") OR ((("1975 stringer offensive") OR ("1975 stringer ostensive")))).
• Removing quotes may allow a broader search: (( 1975 string offensive ) or ((( 1975 stringer offensive ) or ( 1975 stringer ostensive )))).
• Adding a wildcard symbol may retrieve word variants: (("1975 string offensive") or ((("1975 stringer offensive") or ("1975 stringer ostensive"))))*.