Also, do you search of petharbor.com ? Many public shelters use petharbor.com to list their incoming animals and those made available for adoption.
I see you live in Sacramento. So do I. I have been a volunteer with AMAR for a number of years, but I can't foster any more because two of my old dogs have health issues. But I have seen quite a few Maltese or Maltese mixes listed at the Contra Costa County shelters over the years.