I see a couple of things worth checking. In general, when building your Session Relevance query, a good practice is to start simple and test the query at each step.
Do you get expected results for
names of bes sites whose (name of it is "Patches for Windows" or name of it is "Patches for Windows (French)")
It could be as simple as “Patches for Windows” is not really the site name, but the site display name. The actual site name for that one is “Enterprise Security”
(name of it, display name of it) of bes sites
BES Support, BES Support
Enterprise Security, Patches for Windows
The other thing is that a filter like
cve id list of it as lowercase does not contain "unspecif"
will fail (not return the result) if the ‘cve id list’ value does not exist at all. Similar to the ‘source id’ not containing a value, it may not be good to assume that these properties all have a value…so a safer filter (to use in place of ‘source severity’, and ‘cve id list’ may be
not exists cve id list whose (it as lowercase contains "unspecif" or it as lowercase contains "n%2Fa") of it