How can I optimize/refactor a TSQL “LIKE” clause?

Question

I have a table with 117000 or so records. I need to perform a search that checks 3 separate fields for a given string pattern.

My where clause is as follows:

Answer 1

how about

field1 + field2 + field3 LIKE '%' + @DESC + '%'

or

CONTAINS(field1 + field2 + field3, @DESC)