Perhaps you should try some spelling variations:
"1975 string offensive" » "1975 strings offensive", "1975 steering offensive", "1975 striking offensive", "1975 string defensive", "1975 string offense", "1975 string ostensive"
"1975 spring offensive" » "1975 spring defensive", "1975 spring offense", "1975 spring ostensive", "1975 springer offensive"
"1975 settings offensive" » "1975 settings defensive", "1975 settings offense", "1975 settings ostensive", "1975 setting offensive"

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 spring offensive"))) or ("1975 settings offensive"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("1975 string offensive") OR ("1975 spring offensive"))) OR ("1975 settings offensive"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"1975 string offensive\") OR (\"1975 spring offensive\"))) or (\"1975 settings offensive\"))*".
• Removing quotes may allow a broader search: (((( 1975 string offensive ) OR ( 1975 spring offensive ))) or ( 1975 settings offensive ))*.