This search for ταρτάρος in the LXX yields only one result:

If I search for τάρταρος instead, I get Job 41:24 and Prov 30:16, but not Job 40:20.
AFAICT, it's the same word, just accented differently.
How do I search so I get all 3 results, i.e. so the accents don't interfere with the results? Do I have to know ahead of time that a word can be accented multiple ways, and explicitly search for them each?
Thanks