President Ma Ying-jeou ordered rescuers Saturday to step up the search for possible survivors in the landslide disaster triggered by Typhoon Megi on the Suhua Highway in eastern Taiwan. 'We won't give up any hope of finding survivors, ' Ma said during a visit to a disaster response center in Yilan County, which was hardest hit by the heavy rainfall brought by the storm. Transportation Minister Mao Chih-kuo said the foremost important task now is to find the missing individuals and to clear up the roads. In addition to 11 people confirmed killed in the typhoon, Taiwan's authorities and rescue teams are searching for 26 missing people. Among the missing, a 21-person tour group that included 19 Chinese tourists from China's Guangdong Province, their tour guide and bus driver were still unaccounted for as of Saturday morning. They were believed to have been traveling on the Suhua Highway -- a major highway on Taiwan's eastern side, connecting Yilan and Hualien counties, when heavy rain and rockslides caused a section of the highway to collapse. A Taiwanese bus driver and a Chinese tour group leader from another tour bus, belonging to Hong Tai Travel Co., were also missing. Pieces of the tour bus has been located buried beneath heaps of debris. It is believed that the tour guide and driver might have rolled out of the vehicle as it tumbled into the valley. The tourists in the group managed to get off the bus in time. A group of five representatives is scheduled to arrive in Taiwan from China this afternoon on behalf of the families of the missing Chinese tourists. The National Immigration Agency will assist in expediting their entry by streamlining the visa process. Meanwhile, Yilan County firefighting officials have also reported that a couple in a small truck and a driver from a small passenger vehicle were also missing. Earlier, rescue teams successfully evacuated 435 people in the non-stop, two- day rescue effort on Suhua Highway, the Central Emergency Operation Center (CEOC) said Saturday. As the rain brought on by Typhoon Megi has subsided, visibility has improved, enabling the SWAT team to dispatch six helicopters on Saturday morning to airlift the remaining 54 people left stranded at the 114 kilometer section of the highway. Typhoon Megi -- the strongest Pacific rainstorm wreaked havoc across the country by dumping more than 1,200 mm of continuous rainfall, mostly in the northeastern parts of Taiwan in over 48 hours. The typhoon has already killed 36 people in the Philippines and is making her way to southern China. Of the more than 400 people who were stranded, 274 were Chinese tourists. As of 7: 45 a.m. Saturday, 272 of the 274 Chinese tourists and their tour guides and drivers have been rescued, according to the Tourism Bureau. In terms of the 11 people confirmed dead, nine of them were buried when a house located next to Bai Yun temple in the coastal town Suao in Yilan County, collapsed during the heavy rainstorm. Their corpses have been dug out. A small- sized excavator has been mobilized to aid the rescue team in its search effort. Two other bodies were found elsewhere in the township -- one inside a residential home and another near a naval port. 