Perhaps you should try some spelling variations:
"David Duke 1988 presidential campaign" » "David Duke 1986 presidential campaign", "David Duke 1998 presidential campaign", "David Duke 18 presidential campaign", "David Duke 1988 presidential champaign"
"David Duke 1989 presidential campaign" » "David Duke 1986 presidential campaign", "David Duke 1989 residential campaign", "David Duke 18 presidential campaign", "David Duke 1989 presidential champaign"
"david duke 1980 presidential campaign" » "david duke 18 presidential campaign", "david duke 2020 presidential campaign", "david duke 1 presidential campaign", "david dunne 1980 presidential campaign", "said duke 1980 presidential campaign", "david de 1980 presidential campaign", "david june 1980 presidential campaign", "david dome 1980 presidential campaign", "david duke 1980 presidential champaign"
duke 1988 » june 1988, de 1988, dee 1988
duke 1989 » june 1989, duke 1899

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: (((("David Duke 1988 presidential campaign") OR ("David Duke 1989 presidential campaign"))) OR ("david duke 1980 presidential campaign")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"David Duke 1988 presidential campaign\") OR (\"David Duke 1989 presidential campaign\"))) or (\"david duke 1980 presidential campaign\"))".
• Removing quotes may allow a broader search: (((( David Duke 1988 presidential campaign ) OR ( David Duke 1989 presidential campaign ))) or ( david duke 1980 presidential campaign )).
• Adding a wildcard symbol may retrieve word variants: (((("David Duke 1988 presidential campaign") OR ("David Duke 1989 presidential campaign"))) or ("david duke 1980 presidential campaign"))*.