Sales order view filtering problems

Sales order view filtering problems

I have set up a custom view for our sales orders.

I've have set up a few criteria for this

The first set is:



When I run this view, it returns 12 records

For my second set of criteria I changed the number for the Aerosharp entry. This then returned 13 records.




When I remove the number alltogether from the entry I would expect at least 25records to be returned, as it should include all the items from the first two sets of criteria. Yet the following set of criteria only returns 12 records, Some of them matching 1.5 and others matching 3.0, but not the complete set!





I also tried this a second way - see below. However the results were the same (only 12 records returned) some 1.5s and some 3.0s