Homework / test English to Hungarian Bus/Financial Business/Commerce (general) types of trusts

I'm having trouble with translating this expression into correct Hungarian and could not find this expression on the Internet either (I meana relevant Hungarian translation). I found simple/bare trust and grantor trust. I found the English description for a complex trust but in a translation I cannot just explain it in 2 sentences, I need a proper Hungarian expression for this one. Thank you in advance.