Description of problem:

Having a problem performing a boolean operation - searching for bugzillas that DO NOT contain a specific string in a comment.

This saved query:
   https://bugzilla.redhat.com/buglist.cgi?cmdtype=dorem&remaction=run&namedcmd=Cannot%20Negate%20Comment%20String&sharer_id=195083

Includes a boolean operation to return bugzillas that do not contain comments that include this string:
   Triaged by BRMS PM team for 5.2

The query returns (115) bugzillas - of these, (5) contain comments that do include this string:

	724480 	unspecified 	urgent 	Unspecified 	tsurdilo 	NEW 	--- 	Users with analyst permissions cannot open assets
[SEC] 	724737 	unspecified 	high 	Unspecified 	jgraham 	NEW 	--- 	Strip non-enterprise stuff in Drools 5.2
	724331 	unspecified 	high 	Unspecified 	tsurdilo 	NEW 	--- 	declarative model doesn't allow to use a fact as a field type when that fact was created later
	724655 	unspecified 	high 	Unspecified 	tsurdilo 	NEW 	--- 	NPE in AbstractCompositeRestriction when using unbound variables
[SEC] 	724486 	unspecified 	urgent 	Unspecified 	tsurdilo 	ASSIGNED 	--- 	User documentation required for encrypting passwords newly required by Drools serialization in 5.1

(See: https://bugzilla.redhat.com/buglist.cgi?cmdtype=dorem&remaction=run&namedcmd=Seach%20for%20Triaged%20String)


Version-Release number of selected component (if applicable):
3.6

How reproducible:
100

Steps to Reproduce:
1. Run the above queries
2.
3.
  
Actual results:


Expected results:


Additional info: