Perhaps you should try some spelling variations:
"imaginary conversation" » "imaginary conversations", "preliminary conversation"
"imaginary confessions" » "imaginary conversations", "imaginary expressions", "imaginary companions"
"binary expressions" » "binary expression", "query expressions", "array expressions"
"binary regression" » "theory regression"

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