The reason is that the filter is that they work like you wrote (Lost And Found Tour and Partnership Cache) both Lost And Found Tour and Partnership Cache is required on all caches. All selected attributes are required on the same cache and not cache have both
There is no option to create a or option between requirement in a custom filter. Create two instead and add all caches to a VGPS to show what you was looking for
You also need to show archived and a disabled caches to map compare.
The only cache with Lost And Found Tour is GC23HKB 10 Years! (Severni Cechy, Czech republic) that was in 2010
The reason is the same for top finders. The filter is on caches and not on finders. You asks for finds on caches with all attributes set and it is impossible. Positive and negative can't be set at the same time and the maximum is 15 per cache