Perhaps you should try some spelling variations:
"preliminary conversation" » "preliminary consideration", "preliminary observation", "preliminary construction"
"imaginary conversion" » "imaginary confessions", "binary conversion", "military conversion"
"imaginary conversations" » "imaginary conventions"

Try widening your search to All Fields.

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: (((("imaginary conversation") OR ("preliminary conversation"))) OR ((("imaginary conversations") OR ("imaginary conversion")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"imaginary conversation\") or (\"preliminary conversation\"))) or (((\"imaginary conversations\") OR (\"imaginary conversion\"))))".
• Removing quotes may allow a broader search: (((( imaginary conversation ) or ( preliminary conversation ))) or ((( imaginary conversations ) OR ( imaginary conversion )))).
• Adding a wildcard symbol may retrieve word variants: (((("imaginary conversation") or ("preliminary conversation"))) or ((("imaginary conversations") OR ("imaginary conversion"))))*.