Firstly, pay attention to the green-orange part of the board. In the very center column, match the bottom green candy (3rd row) with the bottom orange candy (fourth row). Then match the upper green in the same column with the bottom orange, to make two color bombs one by another.
Secondly, focus on popping soda bottles whenever you can. Do this without help of color bombs - unless it's necessary. They can help much more if pop some bottles yourself, and combine the color bombs for the special effect.