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

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