Perhaps you should try some spelling variations:
"1975 string offensive" » "1975 spring offensive", "1975 striking offensive", "1975 string defensive", "1975 string offense"
"1975 strings offensive" » "1975 springs offensive", "1975 strikings offensive", "1975 strings defensive", "1975 strings offense", "1975 settings offensive"
"1975 steering ostensive" » "1975 steering extensive", "1975 steering 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 strings offensive"))) OR ("1975 steering ostensive"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"1975 string offensive\") OR (\"1975 strings offensive\"))) OR (\"1975 steering ostensive\"))".
• Removing quotes may allow a broader search: (((( 1975 string offensive ) OR ( 1975 strings offensive ))) OR ( 1975 steering ostensive )).
• Adding a wildcard symbol may retrieve word variants: (((("1975 string offensive") OR ("1975 strings offensive"))) OR ("1975 steering ostensive"))*.