Usted buscó: what does that mean exactly (Inglés - Alemán)

what does that mean exactly?
was bedeutet dies genau?

but what does that mean exactly?
was aber bedeutet das konkret?

what does that mean?
was bedeutet das?

and what does that mean exactly – who would exchange with whom?
und was heißt das genau – wer würde wem begegnen?

what does that means?
first, is that correct?