I am having a hard time understanding how to use these terms and to use them in a qualitative research paper.

For example:

The transferability is low as I only conducted one interview.

Credibility - triangulation (for internal validity); considers whether or not there is truth from the participants' perspectives.

Transferability - is it generalizable? In qualitative research it doesn't need to be, but assess how transferable it is or isn't. Considers application of research in other areas with similar settings, people (context, for external validity).

Dependability - can it be replicated (for reliability) and are we likely to get the same findings? Probably not! State what would happen if we did it TWICE...

Confirmability - refers to the degree to which the results could be confirmed or corroborated by others. If other researchers examined your research... "devil's advocate?