As well as that, look to family and friends for investments, and good luck with whatever venture you are doing.
They are the most difficult people to convince and ask for capital if you are looking for investors.
@seratruong, are you the only person that's working on that part of your project? I've looked for some of your post history and is this the exchange that you are working with?
Most of the exchange startups made their own token sale but you need an extreme marketing for that.
It really depends on your situation, I've had a lot of family and friends be welcoming to investment ideas.
If it's an exchange, do a token sale! They seem to be very successful, and try draw money from your personal sources to fund the marketing side of it.