Yes, to the snake plant question. You can divide it and it will be fine.

As for the Chinese evergreens, there really is no way to force them to grow faster. Just make sure they have a large enough container, the right kind of fertilizer, and are watered properly and they grow to be healthy. Patience is the most important part of gardening.

Same info. for the palm. You can't force it to grow faster. They have a set rate of growth and provided you give them what they need that will grow as they should.