AMERS UNITE!

Clear the middle column as fast as u can. When the time bomb started coming down, it will be easier to clear. Create as many combos as possible. Plan your moves. See which are the ones you need to clear. See where your candies are dropping into the next move or if you can anticipate further positions. Sometimes there isn't a need to use up your combo so soon. Position them to your best advantage

Above is the strategy involved for this particular level.  Read through the generic strategies applicable to most levels, if you understand and apply, you would be able to clear. The video will show how the strategy listed above is being applied. http://candycrushsagabylengguanho.blogspot.sg/2013/06/candy-crush-saga-level-147.html