Firebase : search a substring for every field in my collection is impossible?

Question

Example database

Users: [
{name: 'elon mus'},
{name: 'john doe'},
{name: ' eloise ahe'}
{name: 'peter isen'}
]

I would like to search if a user contains the string 'ise'.

I find many solutions but all solutions concern the begin of the field.

it's really possible ?

thanks