Hi Rita,
You can try the following macro:
Documents.Where("NodeAliasPath like '/Site-Settings/NVKB-Branches/%' or NodeAliasPath like '/Site-Settings/NEWS-Branches/%' or NodeAliasPath like '/Site-Settings/MORESTUFF-Branches'").WithAllData
But this will return not only direct children of your nodes but all their children (like if you have substituted .Children with .AllChildren in your queries). But if you need children only direct children (not from all levels), you can still do it by adding NodeLevel parameter to your query:
Documents.Where("(NodeAliasPath like '/Site-Settings/NVKB-Branches/%' and NodeLevel=3) or (NodeAliasPath like '/Site-Settings/NEWS-Branches/%' and NodeLevel=3) or (NodeAliasPath like '/Site-Settings/MORESTUFF-Branches/%' and NodeLevel=3)").WithAllData