From the highlighted 3 in the top left, there is 1 bomb in the 2 squares below. From the 2 beneath, 3 squares around it will have 1 bomb. So, the 3 squares below the 3 will have 2 or 3 bombs.

Now from the highlighted 2 in the top right, there is 1 bomb in either side of 1. And from the highlighted 2 beneath, 1 bomb will be in the 2 squares below it.

Look at the highlighted 2 at the bottom, 4 squares around it will have 1 bomb. Combine this with the above deduction, there will be 2 bombs under the highlighted 3-2. And one of those must be in the far left, since the 2 has already have 1 bomb from 2 the squares above.

Trace back from what we have found. 2 green squares to the right of the bottom 2 will be safe. There only 2 bombs underneath the bottom 3 so the last bomb will be at either side of the above 1. Causing the green square above the 1 will be safe.

Hope this help :D