Perhaps you should try some spelling variations:
"imaginary confessions" » "imaginary conversations", "imaginary expressions", "imaginary conversation"
"query expressions" » "query expansion"
"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 ((("query expressions") OR ("binary regression")))).
• Removing quotes may allow a broader search: (( imaginary confessions ) or ((( query expressions ) or ( binary regression )))).
• Adding a wildcard symbol may retrieve word variants: (("imaginary confessions") or ((("query expressions") or ("binary regression"))))*.