Combine multiple text search configuration

Hi,
I want to know if I can combine multiple text search configurations when I
tried to use FTS.
Is there any options like this:
*to_tsvector(['english', 'french'], document)*

Trying to create a new text configuration:
*Create text search configuration test (copy=simple)*
*Alter text search configuration test*
*add mapping for asciiword with english_stem,french_stem*

This query doesn't work. How can I combine multiple text search
configurations if I need more than one into my query to search a word?