I'm trying to show posts in a special order. Example: I have following categories: CARS TRAINS BOATS NEW OLD All posts will have at least two categories attached. Let's say a visitor clicks on the CARS category. Then I want all the posts from CARS and NEW categories to show first in ascending order and then after that show CARS and OLD posts. As it is now it shows the NEWEST post on top even if the newest post is from the OLD category. Anyone understand what I'm trying to achieve here?