So far, 1,450 people have been confirmed dead in the quake. Tens of thousands are still missing, according to a website where Venezuelans are searching for their loved ones who have not been reached.
The 96-hour window - the period considered critical for finding survivors - closed late Sunday. But rescue workers, many of them from other countries, are keeping hope alive.
"Every now and then miracle rescues happen. You always have to hope that you can make a difference," British rescue worker Mark Leeson told BBC Radio 4.
On Sunday, two 11-year-old boys were rescued from different collapsed houses. One of them was under three meters of rubble, near his dead mother and sister.
American and French rescue teams also managed to pull a man and his teenage son alive from hard-hit La Guaira.
The Venezuelan government has been criticised for its disaster response, not least for its lack of heavy machinery. Reports of Venezuelans digging through rubble with their bare hands are numerous.
"I got my daughter out halfway. But they don't give us any equipment," Wilker Molaya in La Guaira told Reuters.
