If I buy a trailor to live in on property that I owe nothing on can they take that if I am making payments

I'm not sure who "they" is or which item you are referring to. Part of the answer to what I think you're asking depends on which bankruptcy chapter you file.  It also depends on the value of the assets in questions (your trailer and the underlying property you own) and what exemptions are available under applicable law to protect the value in those assets. You need to have a consultation with an experienced bankruptcy attorney in your area to determine your options, benefits and risks.