zawzięta determinacja

Also, there was an air of dogged determination about them.

After he became involved in politics, his dogged determination to demand independence, but without the use of force, won him international respect.

Still, at times he simply fell back on that "dogged determination".

See what a bit of dogged determination does for you!

The Mayor showed a dogged determination to be himself, and do things his way, whether people liked it or not.

That plan and his dogged determination to carry it through saved him.

So long a time on this one, such a dogged determination.

There was indeed an answer, weak, but aiming for her with dogged determination.

"If you really need it, by dogged determination you'll make that thing work."

In its place was a kind of dogged determination.