For one, X-ray and radio telescopes, despite intensive searches, had found nothing. (caltech.edu)
Yet 40 years of intensive searching for extraterrestrial intelligence have yielded nothing: no radio signals, no credible spacecraft sightings, no close encounters of any kind. (seedmagazine.com)
The body of missing Buffalo Police diver Craig Lehner was finally recovered from the Niagara River, ending five days of intensive searching by law enforcement authorities. (nystateofpolitics.com)