3 days Ho-Chi-Minh-City

 3 days Mekong Trip to Phnom Penh

 3 days Siem Riap for Angkor Temple

 7 days in Sihanoukville & Koh Rong Island

 3 days Bangkok
Market in Ho-Chi-Minh-City / Cu Chi Tunnel / Scooter Crowded Streets in HCMC / Angkor Temple (better 3 days) / Killing Fields & Prison in Phnom Penh