Sounds like con-tchoo-dough/dah
May be derived from the word “concha” which means shell.
In its Colombian meaning, it’s used to describe a person who is taking advantage of a situation and not in a good way / A freeloader. Atrevido/a, aprovechado/a, descarrao/a might be synonyms.
“Que mujer conchuda” (to say that woman is a freeloader)
You should hear this expression often enough!