LYNN – She is encouraged by national television exposure on the disappearance of her son and Daisy Colon checks with police daily on their progress in finding him.The search for Giovanni Gonzalez, 5, entered its third week Sunday, one day after America’s Most Wanted featured the missing East Boston boy during the missing persons segment of its Saturday 9 p.m. show.Steve O’Connell, spokesman for District Attorney Jonathan Blodgett, said the search for the boy remains an “ongoing” investigation.”Investigators meet today to determine a list of places that we will be searching. We’re not going to give up,” O’Connell said.Colon on Monday said Most Wanted’s focus on her son’s disappearance and similar attention by the Center for Missing and Exploited Children gives her hope the exposure will spark a sighting of the boy or, at least, provide police with new information on his whereabouts.”If people just keep putting his picture out there then he can be spotted,” she said.The boy’s father, Ernesto Gonzalez, is in the Essex House of Correction in Middleton charged with child endangerment. He is scheduled to return to District Court on Sept. 17.He told police on Aug. 17 that he had not seen the boy since a visit on Aug. 10. A telephone message on Colon’s phone from Gonzalez confirmed for police her claim that she dropped the boy off at Gonzalez’ Brightwood Terrace apartment on the 15th.In addition to the national attention focused on the disappearance, police have blanketed Lynn with color and black and white posters of father and son and conducted informational traffic stops aimed at spurring the memories of people who walked or drove downtown on Aug. 16 or 17.Brightwood resident Steven Long said police have asked for residents’ help over the last two weeks in providing information that could help them find Giovanni.”I just hope the kid’s found safe,” he said.