Advanced search issue

I'm trying to narrow down the search to show all Russian 10 Rouble coins from the Town of Martial Glory series.
Starting with this (year range, diameter and weight), I get 56 coins returned. Scrolling through the list, you will find 11 of them that are not marked with "Commemorative: Series: Towns of Martial Glory" which means there are 45 coins in the series. Which is correct according to this Wikipedia page.

Now no matter what I enter in the Design field - "towns", "glory" or "Towns of Martial Glory", the result lists only 33 coins.

If I enter "ГОРОДА" in the Lettering field, I do get all 45 coins. This search is case-sensitive, by the way.

Looks like the problem is that the "Commemorated event" field is not included in any search query. But it probably needs to be.

Hello,
You may search on the commemorated event using the simple search.
For instance: "Series: Towns of Martial Glory"
I suggest you use the simple search to search on commemorated events, potentially with quotes for better filtering.

Thanks Xavier! That's quite acceptable.