A thug like blood line
A less wild long night
A half high boat saver
The answer is...
Which is a...
And the common thread is...
all the words combine with "life" to make another word/phrase:
A thug(life) (life)like (life)blood (life)line
A (life)less wild(life) (life)long night(life)
A half(life) high(life) (life)boat (life)saver
Let's try this :
A mold with five words
All of your sentences have the same pattern (come from the same mold), as "A xxxx yyyy aaaa(a) bbbb(b)", with xxxx and yyyy being four letters long and aaaa(a) and bbbb(b) being 4 and 5 letters long in whichever order.
Mold is a kind of mushroom!
I think the answer is (and this is probably a bit of a stretch)
Or, in picture form
Each phrase is missing a hyphen. Hyphen (hyphae in English, all I could find to link this is the German translation which is Hyphen) is a part of mycelium. (I don't know much about growing mushrooms!)
A thug - like blood line
A less - wild long night (Not as sure about this line, really.)
A half - high boat saver