betreiben

Etymology
From. A calque of.

Verb

 * 1)  to run, to operate (a business, an engine, etc.)
 * 2)  to do
 * 3)  to pursue
 * 4)  to pursue (someone) in order to collect a debt; to dun
 * 1)  to pursue (someone) in order to collect a debt; to dun