There is continual problem with FamilySearch "Search". It no longer is reliable as it once was.
Here is an example:
- Search for a place only in Historical Records. In this case Kent England (match exactly).
- Result seems to be for Kent and 14 million records.
- Click on Collections to narrow down search and you get everything but "Kent"
- See attachment
This problem is consistently across all filter links at the top... click on births, you get census or marriages, or...anything but births.
FamilySearch Search used to be the best, but now difficult to get reliable results. Most researchers that I know go to Ancestry first now.