Georgiapeach found a Vietnamese news article with pictures about a Polish version of the Amazing Race filming in several locations in Vietnam back in May. The logo looks like Pekin Express and they do tend to film several legs in a country before moving on, so I think this is a Polish version of Pekin Express.
Here's the original article: http://baoquangninh.com.vn/van-hoa/201605/doan-quay-phim-ba-lan-ghi-hinh-cuoc-dua-ky-thu-tai-ha-long-2305639/index.htm
Here's the English translation from the Bing translator:Polish film crew taping "exciting racing" in HA Long
Updated: 7:02 pm, 12/05/2016 (GMT + 7)On May 15, the film crew program "The amazing race" of Poland have taken some footage in HA Long.Attendance of production has brought many employees with technical equipment, props to Halong.
The reality tv show "The amazing race" has contestants involved are Polish, produced according to the orders of Poland.Filming was done at the fish market area in HA Long city.Props are made in the form of fishing simulation tool of the native population.
The program will be broadcast in Poland, then was sell the copyright. Reportedly, after the Quang Ninh, the delegation will continue to spin in Hai Phong, Ninh Binh, Lao Cai, Lai Chau and Dien Bien.