When I was leaving the country, the HR department assured me that I didn't need a return ticket for a tourist visa to enter Vietnam, but the airline insisted on one for check-in, so I had to buy a return ticket last minute. Before joining the job, they promised a single room, but once they took my passport, it turned out to be a room for four. They said they would arrange a work visa upon regularization, but when I asked the company employees, it turns out you have to leave the country every three months to renew the tourist visa.