What is "it" whose function you are having a problem with ("it tells you ... it shows")?
It is true that the hints-from-trees summary in your Tree List or in the 'hints' list accessed from a Person Profile page shows in the middle the data you have entered in your own tree.
Since there may be a large variation in what has (or has not) been entered in the various trees, that summary is not combining all the variations in the various trees that are supposed to be hints matches. For example, some trees may not list a death date or place, or some may only have a year of birth with no location.
If you search the actual tree databases directly from here:http://tinyurl.com/c8mpntm
you will not find any that show Sophia's death in Copenhagen/Cobenhaven, among the hundreds of entries for a Sophia Ter Bosch born exactly in 1598.
When there is a tree indexed that you can't get access to from this sort of search, it may be that the tree owner has made the tree private or deleted it since the last time the trees were indexed.
It is true that the tree-entry display (summary boxes arranged in a row down the page) that you get when clicking on the 'Ancestry Family Trees' link in either of the tree-hints summaries (from your main Tree List or the hints tab on the individual profile page) does not include summaries from all of the trees.
This element of the 'tree-hints' system has acted this way for years. This is also true of the "member connect" tab list of tree summaries for your person -- the list does not include all of the trees, that you can get search results for, at the above list of databases. There is some internal logic set by Ancestry.com that limits the number of these displays, but I don't know what their rationale is. In the page with the series of boxes I have seen 20 or more shown for some relatives (for whom there are also hundreds of tree entries), when accessed from the 'hints' tab in the person profile page.
I have not discovered a workaround that will produce displays from more trees in this mode.
Possibly someone in the MemberTree group can explain this, or at least reply to your request for larger numbers in the display.