JQOM Multiple Constraints Fail

I'm unable to correctly execute the following search logic. I have a
folder node with documents and folders in it. I would like to search
the folder's contents, but I would NOT like the search to enter the
child folders.

With this in mind, I'm trying to build a search query that hits
everything in the target folder, but not in the target folders' child
folders. This leads me to use a descendent node, for the target folder, AND'd
with a number of NOT descedent nodes, one for each of the child folders of the
target folder.

I'll describe my query building logic, then show my code.

1) Build a source that is a selector of all nt:base nodes in the repo
2) build a fullTextSearch constraint with my query string
3) build a DescendantNode constraint that limits my hits to descedants
of my target folder
4) build a AND constraint of these first two

Note: this works just fine so far

5) build a DescendentNode constraint for the first of the children
folders of the target folder
6) build a NOT constraint from the descendant constraint in step 5
7) build an AND constraint of this NOT and the AND from step 4

This also works fine. Here's the problem area.

8) build a DescendantNode constraint for the second of the children
folders of the target folder
9) build a NOT constraint from the desc. constraint from step 8
10) build an AND constraint of this NOT and the AND from step 7

This doesn't work. Interestingly, it seems like you just can't add
AND's to the tree; the second child folder NOT'd and AND'd to the
original query, doesn't work. Maybe I'm misunderstanding how to
achieve this. Here's my code:

//Select all nt:base
Source allDocsSelector = qomFactory.selector("nt:base", "allDocs");

//Build the fullTextSearchConstraint AND'd with the target folder
Constraint fullTextSearchConstraint =
buildFullTextSearchConstraint(session, queryString, qomFactory);
Constraint targetFolderConstraint = buildRootFolderConstraint(session,
targetFolder, qomFactory);
And textQueryANDTargetFolderConstraint = qomFactory.and(
fullTextSearchConstraint, targetFolderConstraint );

//Build NOT descendant constraints to keep the search out of child folders

//NOT descendant of "folderOne", one of the child folders of the target folder
String path = "/BIP/1/1/folderOne/";
Constraint descendantOfFolderOne = qomFactory.descendantNode("allDocs", path );
Not notDescendantOfFolderOne = qomFactory.not(descendantOfFolderOne);
And targetedFullTextANDNotFolderOne =
qomFactory.and(textQueryANDTargetFolderConstraint,
notDescendantOfFolderOne );

String apath = "/BIP/1/1/folderTwo/";
Constraint descendantOfFolderTwo = qomFactory.descendantNode("allDocs", apath );
Not notDescendantOfFolderTwo = qomFactory.not(descendantOfFolderTwo);
And targetedFullTextANDNotFolderOneANDNotFolderTwo =
qomFactory.and(targetedFullTextANDNotFolderOne,
notDescendantOfFolderTwo );

QueryObjectModel queryObjectModel = qomFactory.createQuery(
allDocsSelector, targetedFullTextANDNotFolderOneANDNotFolderTwo, null,
null);
QueryResult results = queryObjectModel.execute();