Seems we found a way to use the search here for 3 letter words if a 4 letter word is included in search.

egr = nothing
but egr and code = search that includes egr.

There is an option in this forum software to include searches below the minimum. Minimum is set to 3, but server end is still 4. But if the 3 letter word is included in this option it is found!

So we need a list of 3 letter words or acronyms, my head hurts from all this search work. Please add to the list.

egr
cts
iac
tbi
blm
int
$42
ecm
pcm