It's not clear what is happening here. It appears that you've filed a wrongful eviction lawsuit, but you have been unable to locate & serve the defendants. If that's the case the Court will give you some time (months) to serve the Complaint or you can request service via publication. I'm not sure why you'd need to refile unless your case was dismissed.
You need to take all of the documentation related to your situation to a local attorney to seek advice that is specific to you. The general advice we could provide in this forum isn't likely going to answer your questions. Do not delay, as courts can be quite harsh when it comes to time limits to bring a case. Best of luck to you.
It sounds as though you filed in small claims court - you can request that the court give you a new date for your hearing (unless the case was dismissed), and then you can have you Defendants served.