FIND() function

[Muzekker_Vatan]

Hi,
I am using expression below to find "DLV" word in a message.

MID([FSU_DLV], FIND("DLV", [FSU_DLV]), 3)

What if i want to find more words in same message? Like "RCF", "DEP", "ARR" etc.

Thanks in advance.