That trunk does not look all that old so it should be possible to get some buds.
Tree vigour plays a big part in the number and strength of buds after pruning. If the tree was not really healthy when chopped this may be as good as you'll get. I'd endorse the above - let it grow, feed well and get it really healthy and cross fingers that something will happen.
Buds on older wood can also take some time to emerge. Fingers crossed that some are still slowly swelling under the bark.
Next step is to research grafting for bonsai. Thread grafts are the best way to add branches where they will not grow. Approach grafts would be a second choice.