Command in ABAP for * (a symbol for all/everything)

Hi ABAP specialists,

can anyone advise which command it is better to use for  * a symbol for all/everything?

here is requirement for a field in the transformation:

if ( SOURCE_FIELDS_TR = 'X1Z' ) and ( SOURCE_FIELDS_LM = ' *ADCB* ' )

result ....

So, I'd like system to go through all records in LM and find me all records that contain in the middle ADCB (before and after these 4 letters there are some numbers and letters)

Which command suits better here: CA, CS or CP?

And how the coding shall be written?

Thanks!

Irina