Searching for english words ANDNOT from a specific greek root/stem...

Grahm, Thank you for looking at this for me.  The problem is I am trying to find words that have been translated to ‘teach’ that did not come from a word rooted in didasko.  The first example, Mat  7:28 I could say may have confused the word translated to ‘teach’ by first looking to the definite article and getting ‘confused’ because of the nature of Boolean searching and lack of logic.  But, the second result Mat 16:12 teach is out of didache, which is why I was hoping that I could search for dida* (grasping at straws).    Let me know if you have thoughts!  Nice approach, as your results were reduced from my 120 to 48. 

Robert, <Lemma = lbs/el/διδάσκω> ANDNOT teach brings up Mt 28:15, which is not teach but ‘directed’.  So the search is looking backwards for what I want.  I think.  It’s looking for items which were translated out of διδάσκω, I want anything that was translated from a word with *διδά” as a stem in it anywhere specifically EXCLUDED from my search for anything that has the English word “teach” translated from it.  Bible word study, does work, but it’s a little GUI for my liking, I want a quick and dirty search with the ability to isolate OUT words from my view, I.E. as discussed above anything with the διδά stem in it.

Mark, wow, I think you may have nailed it with teach ANDNOT (teach WITHIN 0 WORDS (lemma:διδάσκω, lemma:διδαχή, lemma:διδασκαλία, lemma:διδακτικός)).  With this search I was isolated to 6 results in 6 versus I think that’s reflective of the reality.  Can you walk me through the logic?  Or correct me where I’m wrong in the following: ‘you decided to search in the Morph for English words teach (I isolated mine to the NT and Top bibles) and in a specified Morphology (mine Logos Greek Morphology) translated out of the Greek words διδάσκω, διδαχή, διδασκαλία, and διδακτικός.  Is that correct?    One result of note is from 1 Timothy 1:3, it’s “certain persons not to teach” reference provides heterodidaskalein” from heteros and didaskalos.    I tried to modify your original search to isolate out anything with διδά using the following,  “teach ANDNOT (teach WITHIN 0 WORDS (lemma:*διδά*))” but my results were 43 in 41 versus and the second result included Mat 16:12 “were astonished at his teaching (didache).  I was thinking the wildcard should work as you mentioned the lemma filed allows for it and I’m searching for “lemma:*” but I could be off here.

Now, let me ask you (and the group) this question.  If my goal was to see if teach, translated from words other than those coming from or including a root/stem of διδάσ was used outside of the context of teaching or exegesis of scripture, is there a better approach than Boolean searching?  Is there some better approach using Logos Bible Software to search or answer this question for me.  Or, alternatively, a better approach in Boolean searching?

Thank you all for your input.  Amazing community we have here and I appreciate it greatly!

Mark Barnes said:

John R. Weathersby said:teach ANDNOT (teach WITHIN 0 WORDS (lemma:*διδά*))

This doesn't work because the accents matter. You'd have to use teach ANDNOT (teach WITHIN 0 WORDS (lemma:*διδ*)). 

Eureka, I wondered if that was it, perfection!  I downloaded the Greek keyboard per option 1: http://wiki.logos.com/How_to_enter_text_in_Greek_and_Hebrew so if anyone else is having difficulty with ‘g:’ accent free Untransliteration typing.

Mark, thank you.  Also, I just realized you're the person behind the 'Sermon preparation series' also a great help to me!  Praise God for your input into these forums, I'm sure He uses what you've done to benefit many!  …and so I sit, with my scribbled notes to my right, chasing a rabbit hole about ‘teach,taught’ that I’m likely wrong about… but I have the one thing you left out of your video with me; my coffee cup to sip on and slop my notes up as I study they look like they've lived in a fox hole.  Thanks again.

I'm off to define an English Bible collection that I can search using these techniques from as opposed to limiting my searches to ESV.