@Jeff89 there really is no point in doing a search without dates, actually. This is because there are 1,000's of listings in the Sydney area and without any guest preferences, Airbnb only shows 300...these are essentially placeholders until a guest enters more preferences.
If you are a guest, you know when you want to take a trip, how many people are on the trip and what kind of amenities you want. Once a guest enters this information, Airbnb then will display listings that are available for the selected dates, can accommodate the number of guests and have the desired amenities.
So, for example, if you were looking to buy a pair of Footjoy golf shoes on Ebay, you would narrow your search for this type of shoe rather than going through pages and pages of shoes for sale until by chance you found the type of shoe you are looking for. Same with Airbnb listings.
On Airbnb, the search function is totally geared towards matching listings with guest preferences. This link will be helpful:
https://blog.atairbnb.com/how-search-makes-the-best-matches/
Just so you know, when I did a search for your listing, I did it in incognito mode and I was not logged in. Hounding Airbnb would have had no effect on my finding your listing. It is the design of the search function and customer support can't change it. 🙂
I hope this helps!