What does t mean find all the required words

I have issues with this. I can create a 5 letter word for say, 5x1 but it won’t give me credit, then other times I can create a 4 letter word and it will! I tried to figure out if it was tile points, but that is not consistent either. I came here looking for the “rules”. I am currently on a level asking for 5 and 6 letter words. Here are two words not given credit for “spree” and “lambs” but snort is accepted.
Am I missing something?

hi @schwabby

the word length is dependent on vines and crowns
vines do not add to a word's length ... a four letter word with a tile that has a vine is considered a 3 letter word
crowns add to a word's length ... a four letter word with a tile that has a crown is considered a 5 letter word
blasted crowns add to a word's length and most blasted crowns are returned to the board

it is a good idea to review Herb's hints every so often(i.e. one a month)
https://alphabettysaga.fandom.com/wiki/User_blog:HerbM/HerbsHints

words accepted by AB are out of our control ... as Herb mentions the tiles turn green when AB finds that word acceptable

you are welcome ... good luck ... and have fun