i agree, especially the more local jargonish acronyms can be daunting, and I know of no resource to find them. For example HB, CG, OE, SCG, WLL, HX, DB, PF, SO, WP, DP, LP, PV, etc.
Usually you can use the HB site's Search function and see the acronym in enough contexts to get a clue. In a few cases this won't work - (SO, which stands for single origin, is ignored by the search engine, probably because 'so' is a common conjunction.)
nínádiishʼnahgo gohwééh náshdlį́į́h