If you already have the video files (legal purchase/DVD rip), you can add Vietsub manually:
"Suits" is a television drama series created by Aaron Korsh that airs on the USA Network. The show revolves around the lives of lawyers at the fictional law firm Pearson Hardman (later renamed Pearson Specter Litt). The series focuses on the character of Mike Ross (played by Patrick J. Adams), a brilliant college dropout who lands a job at the firm despite not being a lawyer. Alongside Harvey Specter (played by Gabriel Macht), a top lawyer at the firm, Mike navigates the complex world of law and corporate politics. Suits Season 1 Vietsub
Netflix (with Vietnamese subtitle setting) or FPT Play (Vietnam). Best offline option: Buy/rent on Apple TV or Amazon, then download Vietsub .srt from Subscene. If you already have the video files (legal