My method is basically the same as yours
I usually try the search box first by entering a few keywords.
Then if I have no luck, I do a search in compfolio for comps that are:
- closed; and
- marked as entered; and
- any extra details I can remember (for example email entry or webform etc.)
Next I put the results in order of 'Closing Date', starting from the comps that have closed most recently, and then go through each page until I (hopefully!) find it.