The 16-year-old's twin sister Aree Song Wongluekiet carded a 1-over 74 to combine for a third-round score of even-par 146. Thailand, which had a three-shot edge after the second round, moved to 8-under-par 430 for the tournament, one stroke ahead of Spain.
'Other people have to chase us,' said Aree. 'We would like to have been able to extend our lead but we didn't. But, I like our chances.'
'It was very tough, up and down, up and down,' said Thailand captain Angie Suphakarn. 'But, to be able to keep our score the same, I am happy.'
Spain moved into second place thanks to a 3-under 143 effort led by Tania Eloseguie. Eloseguie shot a 3-under 70 Friday while partner Nuria Clau added a round of even-par 73. Spain finished 54 holes at 7-under-par 431.
'Five or six teams are close,' said Spanish captain Vicky Pertierra. 'There is no favorite. Many teams can make it.'
Australia and Germany were three shots back at 5-under-par 433. The United States finished alone in fifth at 3-under-par 435.
The World Amateur Team Championships are a biennial international amateur competition conducted by the World Amateur Golf Council. Each team is made up of two or three players and competes in 18 holes of stroke play over the course of four days. The two lowest scores by players from each team make up the team score for that round.