I just phoned Airbnb to complain about the same issue, and was told to give feedback. The service person thought I would get a callback, but no, this is just information for Airbnb; they are no going to respond.
This is what I wrote before finding out I wouldn't get a response:
"
I searched properties in my town to find the public listing url for a neighbor. I finally found my Topanga property on page 5!!! after a large number of listings for Malibu which is twenty minutes drive from Topanga, and even after one or two in "Santa Monica, near LAX" (the airport) which is half an hour + from Topanga.
A prospective guest would be likely to think, after seeing so many Malibu properties listed, that there were no more Topanga homes, and give up the search. And page 5 was what happened when I put in "Entire home", not a general search. My property might have been on page 10 in a general search of Topanga.
I expect you will say the order of listings is computer-generated, but my assertion is that Malibu properties should not be listed before ones that are local to the searcher's inquiry.
I look forward to hearing what can be done about this unfair practice. I am a super-host but no wonder I am hardly getting any inquiries now the high season is over!"
Airbnb *should* be trying to fix this world-wide (it appears) problem. It is unfair practice for the potential guests, and very unfair on people in small towns.