Extensive search efforts are not always successful in tracing the trekker's whereabouts.

All attempts to trace their whereabouts have failed, despite computerized searches of their dental records, blood groups and medical histories.

And museum officials are proud to say they can trace its whereabouts since the 18th century.

Surely there'd been enough time to trace their whereabouts - that is, if they were on the station as Bunny felt they should be.

Not just fingerprints but microscopic pieces of our skin or hair can definitively trace our whereabouts.

The radio crackled as they traced its whereabouts somewhere on the far side of Granada.

He hadn't found out; the wars had eaten up all his time and energy, leaving none to spare for trying to trace his mentor's whereabouts.

Make sure he doesn't have any devices the Enterprise can use to trace his whereabouts.

The researchers in both studies made use of a tiny ear bone found in fish larvae to help trace their whereabouts.

Jan tried her best to trace his whereabouts through the Parole Board but he simply disappeared.