You have 2 outer rows with nothing but 15 move bombs in them, an inner U shaped line of blocks that go away after one hit and leads you down to the 5 frozen color bombs. If you can make some matches with the bombs that are in the columns, go for it, but otherwise you need to get down to the color bombs and then use them to remove the bombs. Try to make striped candies and mix them with the color bombs to get a large amount of candy accounted for in one shot. After that, keep your eyes on the bombs and what pieces you need to complete your orders and you should be good to go.
For the many Crushers that can’t beat Candy Crush Level 391 here is a decent walkthrough video:
Patricia Frederick’s Tips on Candy Crush Level 391
The hardest part of this level is actually releasing the color bombs. Once you release 2 adjacent color bombs, match them together to clear the bombs. Make vertically striped matches if you want, but do not make horizontally striped ones until you have less than 15 moves left. (More bombs will fall in those outer columns if you disturb the candies in there and those bombs are 15 move bombs.)