If it's the same format each time, and you only want the first 15 characters of each name, then just replacing
CLP_Clip_Title
with
SUBSTRING('clip_clip_title', 1,15)
will do it.
If you want anything more complex (such as a variable length substring based on the location of the last "_" in the title) then define your own SQL function:
https://technet.microsoft.com/en-us/library/aa214363(v=sql.80).aspx[
^] and replace the SUBSTRING call with that.