She took off last night and we're trying to track her down.

The government has been trying for 50 years to track down the paintings.

"This is not much good in trying to track down my own kind."

"I've been trying to track you down for the last hour."

"Just how far did you go in trying to track me down?"

I think we'd better try to track down your husband and let him know the sad news.

It wasn't until the late 1990s that the federal government tried to track down people who may have been exposed.

The cops are trying to track down all her friends, to see what they know.

We're trying to track down her current owners, but that may take a while.

She made it sound like we were trying to track down a lost set of keys.