Check to see if a cell contains multiple texts

I'm trying to check if a cell contain multiple texts.

Example of my code is below:

=IF(ISNUMBER(SEARCH("psca",A2)),"Test",IF(ISNUMBER(SEARCH("email",A2)),"email","")*(IF(ISNUMBER(SEARCH("base",A2)),"CSE","")))

When I use this I keep getting an error that says "You've entered too many arguments for this function"

Any help would be very useful. Thanks!