The EU has given Cambodia one year to improve the situation and engage with the EU to avoid having its privileges removed.
Five awards will be presented this year compared with just one last year: for entrepreneurship, engineering, community development, digital multimedia, and innovation.
Sam Rainsy said the large influx of Chinese immigrants to Cambodia, coinciding with a construction boom and waning relations with the West, could lead to a backlash from locals.
The European Union started an 18-month process that could lead to the suspension of Cambodia's duty-free trade access over its record on human rights and democracy.
Beijing and Washington bicker over history in Cambodia, blaming each other for the rise of the brutal Khmer Rouge regime.
The letter instructed both public and private educational institutions to educate students and “strengthen morals” by disciplining students, though it did not provide examples of what constituted “unusual activity”.
Sam Rainsy left Cambodia in 2016 facing a number of lawsuits filed by senior officials.
More than 100 medical practitioners will take part in the mission, which is the ninth annual mission carried out by CHPAA.
The documentary, “My Mother Sold Me”, which aired in October, depicted a young Cambodian woman apparently selling her daughter’s virginity.
Cambodia’s score has dropped 4 points to 26 out of 100.
In a report released on Tuesday, Human Rights Watch said the government should enforce laws the require legal, social and medical support services are provided to survivors.
Cambodia has an estimated 7 million social media users and almost 11 million Cambodians use the Internet.