Any combination of letters and numbers without some reference as to where they start and stop is a bit of a stretch, but a search for



<[A-Z0-9-]{12,18}>
might work for you.

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Graham Mayor - MS MVP (Word) (2002-2019)
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Thanks for the help!! gmayor

Still some of the occurrences not found like as follows, (sorry if i missing on this)

14AS48MA-TN
15NUA98CA
SZFZ10L-TR
FZQ3975-5.0LTT

Also note that the above numbers are not any particular length (even if it is 8 digits numbers can be possible)

Please advise on this.