How do I find lawyers who take on cases for part of the reward rather than an upfront fee?

I am trying to sue my apartment management company since their employee (my on-site apartment manager) got into my apartment without my permission and stole lots of my personal and financial information and committed lots of fraudulent charges.

My question is: How do I find a good lawyer who specializes in this case? I would also like to know how/where I can find lawyers who are willing to take on a case for a portion of the reward rather than an upfront fee. I am living in the bay area, California.

Any help/information is greatly appreciated! Thanks.