Therefore, I agree to search relentlessly for your parents.

Collectors search relentlessly for an upside down spot.

So, why are some diehards relentlessly searching for the remains of the ancient civilization while others doubt that it existed at all?

Sheriff Cal Burton was apparently still on the prowl, searching relentlessly for the famed outlaw.

He relentlessly searched obscure files in even more obscure courthouses in the Texas hinterlands.

But we can't settle questions about reality with definitions, nor does it seem useful to search relentlessly for a non-design explanation of Mount Rushmore.

Dr Beng has been searching relentlessly for the culprit of an accident that killed his twin brother 18 years ago.

Only when darkness had come had I dared move, for riders had been all about me, searching relentlessly.

He'd wasted fifteen minutes relentlessly searching the lobby for a man talking on a cell phone before he'd realized his mistake.